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The BRAND NEW instalment in the bestselling, beloved Armstrong & Oscar Cozy Mystery series! What readers are saying about T.A.Williams

'A fun mystery and a good read with descriptions that made me want to go book a flight. Dan and Oscar are a great team and kept me guessing!' Bestselling author Anita Davison

'T A Williams whisked me away to the beautiful Italian riviera in the company of an ex-pat private investigator and his gorgeous doggy sidekick on the case of a missing teacher. What a team, and what an adventure!!' Bestselling author Kate Wells

'The perfect combination of character, setting and plot, heralding an addictive new cozy mystery series!' Bestselling author Debbie Young

'Watching unassuming detective Dan Armstrong wheedle the truth out of folks is great fun. Highly Entertaining read!' Bestselling author Kelly Oliver

'Dan and Oscar are great company in a sun-drenched mystery that keeps you guessing right till the end.' Bestselling author Michelle Salter

258 pages, Kindle Edition

Published May 2, 2026

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About the author

T.A. Williams

48 books632 followers
Firstly, my name isn't T A. It's Trevor. I write under the androgynous name T A Williams because 65% of books are read by women. In my first book, one of the (female) characters suggests the imbalance is due to the fact that men spend too much time getting drunk and watching football. I couldn't possibly comment. Ask my wife...
I've written all sorts: thrillers, historical novels, short stories and now I'm enjoying myself hugely Cozy Mysteries. I lived and worked in Italy for a number of years, married an Italian, and fell in love with the country. I set almost all my books in Italy and I hope that my love from the country shines through my work.
I‘ve lived all over Europe, but now I live in a little village in sleepy Devon, tucked away in south west England. I love the place. That’s why you’ll find leafy lanes and thatched cottages in most of my books. Oh, yes, and a black Labrador.
I've been writing since I was 14 and that is well over half a century ago. I'm now approaching 1 million books sold worldwide and I find it wonderful that people as far away as India and New Zealand are reading and enjoying my work. Thank you to everybody who reads my stuff.

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Displaying 1 - 30 of 79 reviews
Profile Image for Srivalli (Semi-Hiatus).
Author 20 books776 followers
May 6, 2026
4 Stars

One Liner: Interesting!

Despite being in Italy for almost three years, Dan has not been to Rome. Now, he gets an opportunity when TV celebrity Tamsin Goodfaith hires him to investigate his uncle’s suspicious death. Philip Hastings was a billionaire financier until he was found dead in his castle in the Roman Hills. Dan and Oscar, his faithful Labrador, investigate the case, and soon, another murder adds to the list. The duo has to solve the case before more deaths occur!

The story comes in Dan’s first-person POV.

My Thoughts

We are in the fifteenth book of the series! It should work as a standalone since the case is pretty independent, and the personal track doesn’t have much development. Readers should be able to follow it easily.

In a way, I was waiting for this book. One of the reading challenge prompts was to read a book with a city in the title. I knew this series would give me something, and it did. We explore Rome this time. Not much of the city itself, but the suburb, where it is cooler, the villas are massive, and the famous Castello del Lago (along with a couple of other castles) is located.

A majority of the book takes place in this castle, though we also check out the nearby places and go on a quick trip to the heart of Rome.

The mystery has a locked-room vibe, since no one from the outside can actually enter the castle to kill someone. Given the genre, the characters (family members) are not particularly likable, though some are better than others. I admit it took me a while to figure out the killer. Even then, I wasn’t sure how the clues would come together. However, it’s done well. Everything is accounted for and tied together to make sense.

How can I not mention Oscar, our dear black Lab? He is a hero as much as the MC and maybe even more! He is so lovable that everyone wants to cuddle him and feed him treats.

To summarize, Murder in Rome is an interesting read with a mystery, a good dose of history, some family drama, and, of course, loads of food! I’m ready for the next book!

Thank you, NetGalley and Boldwood Books, for the eARC. This review is voluntary and contains my honest opinion about the book.

#NetGalley #MurderInRome
Profile Image for Preeti.
868 reviews8 followers
May 22, 2026
The plots have become too repetitive but I am still reading this series for Oscar( the black Labrador).
Profile Image for Beachcomber.
972 reviews32 followers
March 30, 2026
4.5 stars rounded down. If you love cosy historical mysteries, dogs, and Italy, this one is for you. I enjoyed the previous book in the series (my first one, having jumped in), and this one was even better I think. It’s a closed room mystery in that it’s a limited group of suspects who’d had the opportunity to murder the victim, and so Dan and Oscar head up to the family’s castle at the request of one of the family, to investigate - and then more bodies start piling up. Oscar earns a big steak for protecting Dan, of course! Light, cosy, decent mystery and a dog - everything I enjoy 😊

I received a free ARC copy of this via NetGalley and the publishers in return for an unbiased review.
Profile Image for VickydpBooks.
935 reviews14 followers
May 1, 2026
This book was amazing and I did it again this is book 15 in the Armstrong and Oscar Cozy Mysteries!

However this book I read it felt like I was in Rome and I enjoyed the storyline!

There was funny parts in the book as well as spicy scenes.

Former DCI Dan Armstrong has been living and working in Florence for nearly three years—yet somehow, Rome has always eluded him. That is, until glamorous TV celebrity Tamsin Goodfaith turns up with a request he can’t refuse: investigate her uncle’s suspicious death in the Eternal City.
Profile Image for June Price.
Author 6 books82 followers
Review of advance copy received from Netgalley
March 16, 2026
Ah, Rome. The Eternal City. What a delight to be seeing it through the eyes of private detective Dan Armstrong, not to mention his trusty black lab, Oscar. Never mind a murder gets in the way of virtual sightseeing. You just know Dan and Oscar will have it under control soon. In the meantime enjoy the unexpected hidden tunnel in a castle even Dan finds a bit forbidding and, oh, the talk of a ghostly knight.

Seriously, I've come to thoroughly enjoy this series. Dan is a keen observer and quite likable. True, he leaves his wife of about a week behind to take the assignment in Rome but, well, she okays it. You'll get to spend some time with her, btw. Oscar is, of course, probably my favorite character. He's pure dog with an instinct for who'll be soft touch for treats as well as for protecting his human. As a dog person, I definitely approve of Dan's ability to give him his regular walks. Not only does Oscar get some needed exercise to work off whatever treats he's been able to con out of the humans surrounding him but we get to see the area through Dan's eyes and the descriptions are well done and make you feel like you're right there. Although I came to this series late, I've also noticed there seems to be a side case of Dan doing some sort of seemingly benign errand for friends wherever he winds up, which gives us a better feel of his relationships with them. The characters, including suspects, are relatively well-fleshed out and you will be able to differentiate them quickly. Will you be able to discern whodunit? Well, maybe, though I wasn't sure until the end.

Bottom line, a fun case of who killed client Tamsin Goodfaith's Uncle Phil or, to be more accurate, if it was even murder, and, whoa, why do bodies keep turning up. The plot moves along nicely without being slowed by the descriptive excursions, one of which turns out to be sorta spooky. Ghosts, anyone? Why does Oscar keep staring at that rusted suit of armor? What does he know that Dan doesn't? And, oh, much more fun to be had while trying to finger a killer. Thanks #BoldwoodBooks for introducing me to Dan and Oscar and the early peek and virtual tour of an old castle and parts of, ah, Rome. It works well as a standalone and includes humor amidst the darker moments, so a fun read with intriguing characters.
403 reviews19 followers
May 5, 2026
Dan Armstrong is approached by British TV Celebrity Tamsin Goodfaith regarding the recent death of her Uncle Phil, a man of immense wealth, who, according to the Police in Rome, committed suicide, by falling from the top of a tower, the largest tower of his Castle.
He has been recommended to Tasmin by a good friend of his in Scotland Yard, should she decide to investigate her Uncles’ death.
Invited to stay at the Casello del Lago, in the southern sector of Rome, Santa Rita, he and Oscar set off for what looks like a few days in a beautiful location, living in a very formidable Castle, while trying to piece together the series of events which lead up to Phillip Hastings, CEO of ASH Finance, death.
Tamsin is concerned that the family in residence for their summer sojourn in Rome do not know that Dan is Private Investigator. It is not long after Dan and Oscar arrive, he becomes aware of some very deep family tension, which immediately sets him to wondering, could it have been murder rather than suicide.
A second death occurs, which is indeed murder, and when Dan is almost killed, along with Roger Hasting, the new CEO of the Company, he really does begin to believe that someone in the family is committing murder, but who and why is the question that needs answering.
Another death raises yet more unanswerable questions but also sets the remainer of the family at odds with one another, as it really is apparent that one of them is ruthless and utterly unscrupulous.
Is it possible that the history of the Castello and the region could have something to do with the murders, but if so, what? And what is it that makes Oscar seriously question the suit of Armour in the entrance to the Castello?
Murder in Rome from TA Williams, book 15 in the Armstrong and Oscar Murder series, is another excellently executed cozy murder with so many carefully created layers, a murderer well hidden in plain sight with the twists and turns within the plot line such that it could be any one of the people at the Castle, except perhaps, the Ghost of the Unknown Knight, buried in the garden. Well maybe!
It will certainly keep you guessing!
Profile Image for Scilla.
2,063 reviews
Review of advance copy received from NetGalley
April 30, 2026
This is a great addition to the series. When Dan goes for an expresso a woman who looks familiar approaches him and asks to talk. She wants him to go with her to Rome. Her family owns a palace outside of Rome and she needs a private investigator for a murder investigation. He was recommended to her by a friend at the Met Police. Her Uncle Phil appears to have fallen off the highest tower. The police believe it was an accident, but she believes it's murder. He agrees to go to the palace. There are three brothers, and a sister in the family. The oldest brother, Roger, is the current head of the wealth management company ASH now the father is dead. Dan agrees to go, and gets to the castle on Wednesday evening. At dinner that night, the second brother, Scott hasn't come to eat.
After, dinner, Tamsin shows Dan and Oscar how to go down to the dock where Scott is probably tending the boats. They go to the basement and through a tunnel. In the boat shed in addition to the several boats, there is a man hanging from the rafters. Tamsin confirms the man is Scott, and he is dead. Dan calls the police. Dan notes to the first two police that he thinks Scott was dead before he was hung. Then, Inspector Fabrizi arrives. She offers Dan and Tamsin a ride up to the castle. The next morning they hear that the pathologist says Scott's death was definitely murder - the back of his head had a very recent lump and his skull was cracked.
Dan and Fabrizi are not both convinced that there is a killer and most likely both Uncle Phil and Scott were murdered. The question now is are the killings by people inside the palace, or have they come from outside ?
You need to read the book to figure out what happens from here on. I thank Netgalley and Boldwood Books for the ARC so that I could read the book before publication.
571 reviews34 followers
Review of advance copy received from Netgalley
April 23, 2026
Netgalley Review
The writing was detailed with the perfect balance of description to action. The little details gave life to the story and slowed it down. Nothing felt rushed as we worked through the different possibilities as to who the murderer was.

The chapters were fairly long and sometimes split. There was a Prologue to start the story, with the chapters following. Each chapter was headed with the day and occasionally a time (afternoon, evening etc). This gave the story a good grounding by allowing you to see how time was passing.

There was an interesting pace and flow to the book, set by the details and going through each possibility. We went round in circles and gradually the circles got bigger until we were told who the murderer was. I was quite in the dark with no reasonable guesses as to who it could have been. Little bits of information kept being added which changed the course of the investigation. Despite this type of pace and flow, it was engaging enough that I easily sat and read it for long periods of time.

The characters were excellent. I love the main characters and was pleased that Oscar the dog had a couple of moments where he shone.

The surrounding cast were all suspicious as there was no clear motive for much of the story and we had to go on personality and behaviour. This technique certainly kept me guessing.

Lastly the settings. I loved the intricate details used to really bring the surroundings, and therefore the story, to life. I enjoyed reading about the food that the characters consumed. That was a lovely detail which gave an extra layer to the story.

Overall an excellent read, full of exquisite details that made me want to visit Rome!
Profile Image for Ilana.
1,108 reviews
May 4, 2026
After 30 years in the Murder Squad, Dan Armstrong is nowadays based in Florence, but this time, shortly after his wedding with history professor Anna his investigative steps are taking him to the historical city of Rome, where he is requested to help finding the murderer of a rich UK financier, the uncle of a famous TV personality Tamsin Goodfaith, settled in a Roman castle. And who can say upfront ´no´ to a famous and beautiful TV star? Soon after though, there is a second murder taking place, and Dan has to find who is behind it, until it is not too late. It seems that getting to know Rome took him - and the curious Labrador Oscar who is accompanying him - into a completely new unexpected direction.

Cosy, smart and very well connected to the daily realities and Italian history, Murder in Rome is well planned and written with humour that may not affect the seriousness of crime investigations. As usual, the environment is well depicted, and the ambiance is very specific, as you almost feel yourself transported into old castles and Rome´s historical sightseeings. Add to this some lavish food descriptions, worth the fame of a Roman banquet.

The story unfolds within less than a week, in diary-like entries, with well-observed characters. It is relatively impossible to fathom what will really happen until the end, and I liked how T.A.Williams spread various hints at specific moments, most of them being nothing more than hints.

A recommended read if you love Italy and want to discover it, especially Rome, with different eyes and in a more unique, history-seasoned and crime-related way.

Disclaimer: Book offered as part of a book tour but the opinions are, as usual, my own
Profile Image for Rachel Gilbey.
3,460 reviews578 followers
June 9, 2026
Well we get to visit a new part of Italy in this book, and it's one that Dan hasn't been to before either, for it's Rome! Ok technically most of the action is at a giant castle in the hills above Rome, rather than the city centre itself, but it's still a bit different.

For a start we get to learn of different local delicacies, but equally as seems to be par for the course by now, wherever Dan goes, the dead bodies aren't far behind!

And what a castle he gets to stay and investigate in, plenty of space for Oscar and what appears to be a closed door mystery. Tamsin is convinced her uncle Phil was murdered, despite the police ruling it as an accidental death, and within hours of him arriving at the castle, one of Phil's sons is dead.

And it escalates from there. I'm not really sure I particularly liked anyone in the castle, they all seemed rather self centred, and the child we didn't get to know enough to be able to like her! I had absolutely no idea who the murderer was, and was very eager to discover the truth.

Again for me one of the stars and most important characters in this book is of course Oscar. I'm convinced that I'd love to see a book from his point of view as he is such a wonderful protector of Dan, and detective in his own right. Ok he woofs a bit, and is very food orientated but he's got amazing instincts, and once again does a stellar job. Oscar definitely needs a statue built in his honour!

This was another incredibly enjoyable addition to this series, which I thoroughly enjoyed. And this is a series that continues to go from strength to strength. I look forward to seeing where Murder will strike next!

Thank you to Boldwood Books and Netgalley for this copy which I have reviewed honestly and voluntarily.
Profile Image for Leanne.
1,355 reviews104 followers
May 7, 2026
Murder in Rome is another delightful instalment in the Armstrong & Oscar series, blending sun‑drenched Roman atmosphere with the comforting charm of a classic cozy mystery. Dan Armstrong may have settled into life in Florence, but Rome has always managed to stay just out of reach—until glamorous TV personality Tamsin Goodfaith arrives with a case he can’t refuse.

What begins as a favour quickly becomes something far more tangled. Philip Hastings, a billionaire financier, has been found dead in his medieval castle in the Roman hills, and the setting alone is irresistible: crumbling stone, whispered legends, and a household full of secrets. Dan and Oscar step into a world of luxury that feels just a little too polished, surrounded by suspects who smile too easily and alibis that crumble at the lightest touch.

The dynamic between Dan and Oscar remains one of the series’ greatest joys—Oscar’s snack‑stealing antics offer just the right amount of levity as the investigation grows darker. And when a second murder strikes, the case turns sharply personal, pushing Dan into dangerous territory where ghosts, grudges, and long‑buried motives collide.

The pacing is brisk, the mystery satisfyingly twisty, and the Roman backdrop adds a gorgeous sense of place—sunlit piazzas, shadowed corridors, and a castle that seems to hold its breath. It’s cozy crime at its most charming, with just enough bite to keep you guessing.

Murder in Rome is a warm, witty, and wonderfully atmospheric escape, perfect for fans of character‑driven mysteries with heart, humour, and a loyal dog who always steals the scene.

With thanks to TA Williams, the publisher and netgalley for the ARC
Profile Image for Shereadbookblog.
1,036 reviews
Review of advance copy received from Netgalley
March 18, 2026
This is the fifteenth in the Armstrong and Oscar Cozy Mystery series. It is the second I have read, and it works well as a stand-alone.

Englishman Dan Armstrong, a retired DCI, now resides and works as a private investigator in Florence, Italy. His faithful sidekick is Oscar, an instinctively smart canine companion. Despite his recent marriage, Dan is called to Rome by an attractive TV celebrity, Tamsin Goodfaith, to investigate her uncle’s possible murder, suicide, or accident. She believes he was murdered.

The family home is a magnificent medieval castle inhabited by the four wealthy children of Tamsin’s uncle, three of whom are involved in the family business. When one of them is murdered, Dan collaborates with the local police to unravel the mystery, hopefully, before another family member meets a similar fate.

This is a captivating and entertaining read with a mystery that keeps readers guessing. Oscar’s delightful presence enhances the enjoyment of the story, and, as always, he proves to be a valuable and reliable assistant. The history and scenery of Rome immerse the reader in the location, while the fast-paced resolution of the mystery enhances the overall enjoyment of the book.

I look forward to the next installment in this series.


Thanks to @NetGalley and #BoldwoodBooks @TheBoldBookClub for the DRC.
Profile Image for Louise Wilson.
3,864 reviews1,703 followers
Review of advance copy received from NetGalley
April 11, 2026
An Armstrong and Oscar Cosy Murder Book 15

Former DCI Dan Armstrong has been living and working in Florence for nearly three years - yet somehow - Rome has always eluded him. That is, until glamorous TV celebrity Tasmin Goodfaith turns up with a request he can't refuse - investigate her uncle's suspicious death in the Eternal City. Philip Hastings was a billionaire financier = found dead at his magnificent - if slightly spooky - medieval castle in the Roman hills. Dan and his faithful canine companion, Oscar, soon find themselves surrounded by luxury, secrets and more suspects than sightseeing opportunities. But when a second murder follows close behind, the case turns dangerously personal.

With lots of suspects to choose from, only made this story more interesting for the reader to try and solve. Dan is asked by TV celebrity Tamsin Goodfaith to look into her uncle's murder. Then another body turns up.

I quite like this series of cosy murder mysteries. Dan is a likeable character, Oscar is lovable. This is a descriptively written story. I like the author's writing style. The characters are well-developed. I'm looking forward to reading the next instalment.

Published 2nd May 2026

I would like to thank #NetGalley #BoldwoodBooks and the author #TAWilliams for my ARC of #MurderInRome in exchange for an honest review.











3,878 reviews46 followers
Review of advance copy received from NetGalley
April 23, 2026
Not really in Rome but who cares!🤓

4.5🌟 stars
I got a kick, as usual, out of Dan's black lab Oscar's role in the eventual nabbing of the criminal, but I also enjoyed the curves and twists in the suspect pool and how Dan Armstrong's life is evolving. He's now recently married to the Italian history professor he's been dating and she actually becomes "the third musketeer," so to speak, in his tight team of investigators ready to help the police.

The setting is mostly confined to the hill towns south of Rome, frequented for centuries by vacationing popes and Romans wanting to sample the local wines and enjoy a cool down away from sweltering Roman summers. The death of the super wealthy owner of a castle is the thread that pulls Dan and Oscar to the castle at the behest of the dead man's niece. Most of the suspects are family members and English, the main reason Dan's involvement as a translator and sounding board for the local detective in charge fits so well. Enough suspects to keep you in suspense and an action ending that, of course, involves Oscar. I also liked the way that history, both centuries old and more recent, played a role in the plot.

Thanks to Boldwood Books and NetGalley for sharing a complimentary advance copy of the book; this is my voluntary and honest opinion.

Profile Image for Kathy.
104 reviews2 followers
May 4, 2026
Medieval castle, beautiful location, mysterious deaths!

Dan Armstrong and his lovable black lab, Oscar, are invited to solve a mystery near Rome. A British TV celebrity has heard of the former DCI's sleuthing abilities and asked him to figure out if her beloved uncle’s death was, in fact, a suicide. Dan arrives at the home of the uncle, a medieval castle situated on a lake outside of Rome, to find many family members on their summer vacation. Not your ordinary family, they are billionaires who own an exclusive financial business. When Dan discovers another body, he and Inspector Chiara Fabrizi from the local police have many suspects and few leads.

I love the Armstrong and Oscar cozy mystery series, and this 15th book in the series doesn’t disappoint. It is filled with wonderful descriptions of the scenery and the food. It is a joy to read and makes me want to return to Italy. The murder mystery is complex and kept me guessing till the end. There were so many characters that could have committed the crimes. Dan’s new wife, Anna, joins him on holiday and ends up providing valuable clues.

Foodies and armchair travellers will enjoy this cozy mystery. It will whisk you away to an idyllic Roman lake with a forbidding castle and hidden passages. And don’t forget the killer on the loose!

Thank you to NetGalley and Boldwood Books for the advanced reader copy!
Profile Image for Paloma.
710 reviews10 followers
Review of advance copy received from Netgalley
May 1, 2026
Dan Armstrong, private investigator, and his loyal labrador Oscar are back with a killer that seems to want to take out a whole family.

Tamsin Goodfaith is sure that her very wealthy Uncle Phil was murdered. He was found dead at the bottom of a crumbling tower in his castle. She asks Dan to help solve the case and he can bring Oscar with him. While at the magnificent castle, Dan and Oscar begin to investigate the case and suspect Uncle Phil's four children Roger, Scott, Andrew and Sophie. But when the male sons start dying at the castle, it seems like the killer is one of the family members. But who is the killer and why are they killing the Hastings siblings?

Another great murder mystery by the great intuitive Dan and Oscar. I loved the descriptions of the castle (Castello del Lago) and the meals that Dan and Oscar got to enjoy. Oscar was very active in this investigation and even saved Dan's life. I can never get enough of Oscar and his never ending hunger. The historical origin of how the castle became part of the Hastings family was very interesting. A very interesting murder mystery with hilarious moments starring Oscar.
Thank you Netgalley and Boldwood Books for this eARC. All opinions are entirely my own.
Profile Image for Elaine - Splashes Into Books.
3,918 reviews144 followers
May 2, 2026
Don't you love it when you discover
A favourite author has written another!
I have to confess I certainly do
And for this author that's especially true.

Murder in Rome is the latest fabulous read
More like this is definitely what I need.
With great characters, mystery and surprises galore
It is certainly the kind of read I adore.

Dan is invited to visit a castle near Rome for a case
A celebrity tells him more about the place.
She wants him to investigate her uncle's recent demise
To discover what happened and if someone is telling lies!

After his arrival he meet the others staying there
The offspring of the deceased and spouses - they need to beware
For shortly after they discover one of her cousins, dead.
It was made to look like suicide but is it murder instead?

A story full of family, history and mystery, too,
With Oscar and Dan seeking every clue.
There's danger for them all until the killer is discovered
And their dreadful motive is finally uncovered.

Definitely a book I highly recommend
Such a great read in which my time to spend.
I hope you'll get to read it, too,
And find you agree with my review!

For my copy of this brilliant book I say thank you
As I share with you this, my honest review.
2,343 reviews34 followers
June 16, 2026
I have become quite fond of this series where former DCI Dan has moved to Italy with his trusty canine Oscar where he not only sets up a flourishing PI business, helps the local constabulary solve murders, falls in love and marries his beautiful wife. His and Oscar’s reputation have spread far and wide and he is hired to discover whether a wealthy scion committed suicide, was murdered or just had a bad day at great height. The man’s niece disputes the verdict of suicide by the local police and invites Dan and Oscar to the beautiful villa outside of Rome where it all happened.

As they investigate the property, they are awe struck by all the secrets this formidable castle holds from unknown tunnels and hidden doors to an old set of armour that seems to have a mind of its own. Everyone in residence including the extended family are suspects. But the suspect list gets whittled down as one by one more murders occur. Who is responsible and are all the events connected. If so, what is the connection and perhaps more importantly what is the motive.

I do enjoy watching Dan and Oscar work. Without saying a word, Oscar always makes that well timed move that saves the day. Five purrs and two paws up.

Profile Image for Joan Jordan.
260 reviews4 followers
Review of advance copy received from NetGalley
March 29, 2026
Former British Detective Inspector Dan Armstrong is living in Florence and operating a private investigative agency. A well known British actress asks for his help in Rome regarding her uncle's death. Though the local police have ruled his death accidental, she is convinced that he was murdered. Dan, and his trusty labrador sidekick, Oscar, agree to travel to the eternal city to help discover the truth. What they discover is a family with a lot of secrets, including a secret tunnel providing access to their castle home. When another family member dies under suspicious circumstances, Dan must work with the local police to find the truth.

I've enjoyed several of the Dan and Oscar cozy mysteries and this is another fun book in the series. Oscar is often the star of the show, behaving in not always polite dog-like ways, but occasionally demonstrating a protective instinct that anyone with a canine companion would hope to have. Dan has a sharp mind but is not egotistical, always working well with local law enforcement and not needing the spotlight. You can't go wrong with Dan and Oscar!
Profile Image for Alison.
3,762 reviews147 followers
May 3, 2026
Dan Armstrong, former Met police detective turned Private Eye and aspiring author of detective novels, is approached by an English actress, her wealthy uncle has fallen to his death from the tower of his holiday castle just outside Rome, the local police suspect an accident or suicide but she is convinced he was murdered. Dan agrees to travel to Rome with his trusty side-kick Oscar (the Labrador) to investigate, but no sooner has he arrived than a second body is discovered, and this time there can be no doubt that he was murdered.

This appears to be an inside job, the castle is too well secured for a random stranger to be able to walk in and attack someone, moreover since neither victim seems to have defensive wounds it suggests the murderer is someone they know. The castle only had 13 occupants at the time of the first death. The deceased three sons, their three wives and one granddaughter, his only daughter and her boyfriend, his PA, the chef, the housekeeper, and the part-time gardener. But what could be the motive? Could the missing will have something to do with it?

Mr Williams does well to suggest two likely suspects and he kept me guessing right to the end, but once explained the clues were there, dropped like little breadcrumbs for the reader to spot.

Anyway, another lovely cosy mystery complete with marvellous descriptions of the fabulous meals served at the castle.

I received an ARC from the publisher via NetGalley.

Available on Kindle Unlimited.

Bumped for release.
Profile Image for Colin Bell.
1,140 reviews14 followers
May 2, 2026
In this the latest book in the series Dan, a retired British DCI and now a private investigator living in Florence, is engaged by TV celebrity Tamsin to find out whether her billionaire uncle did die by suicide or was murdered. Travelling to Rome he is invited to stay at the late uncle's medieval castle, together with his faithful ever hungry Lab Oscar things become even more complicated when another murder occurs.
I have only read a couple of the previous books in the series, however it is easily read as a standalone book. As with the previous books that I've read it is a slow paced cosy mystery with plenty of twists and turns of the type that I enjoy. It does give an insight how the other half live where money is no object, but not necessarily making people happy. There are so many suspects it was difficult to guess who the murderer is and their motives, but this makes the story more interesting. Oscar is there to give some light relief and support for Dan. In summary an absorbing cosy mystery.
I received an advance copy of this book from the publisher through Netgalley, however this did not influence my review of the book.
Profile Image for Lynda.
2,410 reviews124 followers
Review of advance copy received from NetGalley
April 30, 2026
Book 15 in the Armstrong and Oscar Series and it really is the gift that keeps on giving. This latest adventure for PI Dan Armstrong and his lovable sidekick Oscar takes them to Rome after Dan is contacted by Tamsin Goodfaith, who was a contestant in a reality television series.

Briefly, Tamsin’s uncle, wealthy Philip Hastings, died recently after a fall from a tower and the police have ruled the death accidental. She is suspicious and has asked Dan to investigate. Hastings home, where the fall happened, is a 16th century castle near the Papal Summer Palace at Castel Gandolfo. With the head of the family now dead, and no will to be found, tensions amongst the rest of the family are high.

Although this is part of a series, it could be read as a standalone, and it is one of my favourite books from the whole series. A lovely cosy thriller which is also a great advertisement for visiting Italy, as always the descriptions of the places and the food are sublime. Very entertaining and enjoyable read.
Profile Image for Mystica.
1,841 reviews32 followers
May 19, 2026
Tamsin Goodfaith is a celebrity and she has approached Dan a former Detective from Scotland Yard, now running a private Detective agency and living in Italy with his very new wife, because she is suspicious about the circumstances surrounding her uncle’s death. Uncle was a billionaire, there are three sõns and one daughter, but there are hidden tensions within the family.

Dan and his faithful hound Oscar are invited to the castle where the family is staying as a friend of Tamsins. When a second murder occurs, along with an attempted murder of another son and Dan as well, the local detectives have their hands full before the murderer eliminates the entire family. Suspects vary as the days go by but pinning the murder on someone with proof is not as easy as one would think.

The setting of the impressive castle was impressive, with a good dose of history, the excursions to Rome added further topics of interest and the food of Italy is tempting to say the least.

A well balanced cozy with a very much closed doors mystery murder feel.
Profile Image for Barbara Schultz.
4,376 reviews313 followers
June 9, 2026
Title: Murder in Rome
Author: T.A. Williams
Series: Armstrong and Oscar Cozy Mystery #15
Narrator: Simon Mattacks
Format: 🎧 Hoopla
Publisher: Boldwood Books
Genre: Cozy Mystery
Pub Date was: May 2, 2026
My Rating: 4. Stars
Pages: 258

If you are new to Dan and Oscar here is some backstory.
Dan Armstrong is a retired Brit Detective. He and his faithful black Labrador dog Oscar were living the good life in Tuscany, Italy. Dan went to Italy as a retirement gift. He had recently divorced and the trip sounded like a perfect time to regroup as he has always wanted to be a writer. He has an adult daughter whom he adores.
Now Dan Armstrong has remarried but still lives and works in Florence. His wife has a home in the city, so they decide to keep both homes.
Since he is a Private Detective, he is flattered when glamorous TV celebrity Tamsin Goodfaith wants him to investigate her uncle’s suspicious death in ‘The Eternal City’ aka Rome. Since he loves Rome she didn’t have to twist his arm!

Always an enjoyable read!!!

Profile Image for M.J..
Author 120 books266 followers
May 2, 2026
Murder in Rome is somehow the 15th book in the Armstrong and Oscar mysteries, and I've read them all (apart from 1, which I seem to have missed).

This latest outing sees Dan taking a trip to Rome, somewhere he's not been before, with Oscar at his side. What he encounters is a palatial residence that seems to be hiding its own secrets, but his remit is simple, determine if Philip was murdered, or whether he really did commit suicide. As Dan begins to investigate there are strange goings-on as the dysfunctional, wealthy family.

Murder in Rome unfolds as earlier books in the series. The reader genuinely doesn't know who can and can't be trusted until there is a huge breakthrough. For this one, I loved the historical elements as it's passed time Anna was able to help Dan solve his cases. Of course, Oscar has a starring role once more too.

Always a guaranteed good read, once more, I didn't guess who did it! I do love this series.
Profile Image for Avid.
193 reviews41 followers
May 3, 2026
Murder in Rome by T. A. Williams is one of those books where the setting does a lot of the heavy lifting. Rome comes alive through its streets, cafés, and quiet corners, adding a natural charm to the story.

The story follows Dan Armstrong, a former detective now working as a private investigator, who is drawn into a case as a woman thinks there is something shady about the death of her uncle. As he begins with his investigation, more people end up dead. Dan pieces together clues that point to a crime rooted not just in the present, but secrets from history get revealed.

The mystery itself is engaging without being overly complex. Dan Armstrong is a steady, likeable protagonist, but Oscar is the real hero of the story.

The book is in familiar cozy-mystery territory. The pacing is comfortable, sometimes a little too slow. The story holds your interest, but it doesn’t quite deliver any standout surprises.

Thanks to the publisher for the ARC.
Profile Image for Chryssa.reads.
179 reviews13 followers
May 2, 2026
Detective Dan and his loyal dog, Oscar are back to business and to their investigations. This time the action takes place in beautiful Rome.
Dan is asked to look into the suspicious death of the uncle of a glamorous tv star, Tamsin Goodfaith.
So he lets wis now wife Anna at home, and goes to investigate, at the nedieval castle in the Roman hills.
Here they found luxury, a lot of secrets and beautiful surroundings to visit. And when another death happens, the situation becomes more personal.
Detective Dan and Inspector Fabrizi have an interesting case and like always, Oscar will help too, and save Dan's life too.

This is a cozy murder mystery well written, loved the characters and the description the author does.
Thank you Netgalley and Boldwood Books for the opportunity to read the book in advance. This is my honest and only opinion.
Profile Image for Jane Hunt.
Author 3 books117 followers
May 6, 2026
A trip to Rome for Dan and Oscar in this adventure, where they stay in an ancient castle just outside the iconic city. A TV personality hires Dan to investigate the dramatic death of her billionaire, financier uncle at his castle holiday home. Dan and Oscar stumble into a family drama that may hide relatives with murderous motives. I listened to this on audiobook and read this story, which captured my interest from the start. The narrator excels in portraying the characters and brings the story to life for the listener. There's cuisine, culture, history, and mystery in this engaging story, which shines thanks to Oscar's doggy antics and Dan's investigative skills. It's a story to escape into with a twisty mystery, complex characters and a hint of the supernatural. It's a series that retains its charm with each book, and I can't wait for the next one.
1,036 reviews32 followers
Review of advance copy received from Netgalley
March 19, 2026
Dan Armstrong and Oscar are off again to investigate, this time in Rome. What was initially thought as one individual case turns into so much more. Did anyone commit suicide? Are there multiple murderers in the castle? Is someone hiding in the coat of armour that’s disturbing Oscar? This is an interesting and entertaining read. I really like this series, and I am always keen to read the latest edition. The main characters are well-known by now and the “episode” characters are well-rounded. There’s an overarching arc so the books are best read in order. They do however work as standalones, and there are no cliffhangers. All loose ends are tied up at the end. Highly recommend this very enjoyable book and series.
Profile Image for Pietro.
577 reviews16 followers
May 7, 2026
While I admit to having loved every book in this engaging series, this may have been my favorite one! To say why might be a spoiler, as it involves the unexpected resolution to the mystery. My only quibble is that the story does not really take place in Rome, but at a lakeside castle in the countryside near Castel Gondolfo, so the title and cover are slightly misleading. However, the usual components are present: wonderfully evocative descriptions of the setting, the food, and the history that connects to the characters. Once again, Oscar serves admirably as friend and bodyguard, and Anna plays a brief but memorable role. Thanks to the author, publisher, and NetGalley for the opportunity to review this book.
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