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It’s the season of peace and goodwill, but a Victorian Christmas is no holiday for the world’s most popular detective in this new book from Bonnie MacBird, author of the bestselling Sherlock Holmes novel Art in the Blood.

It’s Christmastime in London, and Sherlock Holmes takes on two cases. The angelic three-year-old child of a wealthy couple is the target of a vicious kidnapper, and a country aristocrat worries that his handsome, favourite son has mysteriously vanished from his London pied à terre. Holmes and Watson, aided by the colourful Heffie O’Malley, slip slide in the ice to ensure a merry Christmas is had by nearly everybody . . .

400 pages, Kindle Edition

First published October 13, 2022

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About the author

Bonnie MacBird

19 books381 followers
Bonnie MacBird has been a screenwriter (TRON), studio executive (Universal) producer (three Emmys), a playwright and a classically trained actor. She taught writing at UCLA Extension's Writers' Program, and is a regular speaker on writing, creativity, and Sherlock Holmes.

She has six Sherlock Holmes novels, all for HarperCollins. ART IN THE BLOOD (2015), UNQUIET SPIRITS (2017) and THE DEVIL'S DUE (2019), THE THREE LOCKS (2020) , WHAT CHILD IS THIS? (2022) and THE SERPENT UNDER (2025) A sixth is in work.

MacBird lives in London

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5 stars
307 (32%)
4 stars
377 (39%)
3 stars
201 (21%)
2 stars
53 (5%)
1 star
18 (1%)
Displaying 1 - 30 of 135 reviews
Profile Image for Bill.
1,206 reviews195 followers
December 30, 2023
Christmas is the perfect time to reread this Holmes adventure.
In Bonnie MacBird's fifth novel featuring the great detective we find Holmes & Watson investigating two cases: the attempted kidnapping of a child & the disappearance of the Marquis of Blandbury's twenty-one year old son.
MacBird fills the pages of her novel with drama, humour, action, enotion & much more. Here, as in her previous novels, Holmes & Watson are a brilliant combination of Conan Doyle's creations & her own unique take on them.
Frank Cho provides some nice illustrations to accompany the story & there's a brilliant plot twist that causes Holmes & Watson's friend Heffie to exclaim "Well, Doc, I thought I'd seen plenty, but I'll admit I didn't see that one coming, neither." Nor did I, Heffie. Nor did I!!
Profile Image for Mimi Matthews.
Author 24 books4,568 followers
April 28, 2022
From my endorsement:

Victorian London comes alive in this enthralling Christmas mystery, written with intelligence, style, and lovely period detail.
Profile Image for 4cats.
1,039 reviews
September 23, 2022
I was really looking forward to giving this a read, unfortunately it didn't hit the spot. I worked it out immediately, so there isn't really a mystery, it feels like it's just box ticking. The writing felt lazy at times with references to Bonnie MacBird's previous Holmes and Watson novels thrown in for those readers who are new to the series. There are some excellent modern takes on the Holmes canon however this wasn't one.

Many thanks for the opportunity to read an early copy.
Profile Image for Jennifer.
11 reviews4 followers
February 2, 2023
I enjoyed this book, until the author unfortunately decided to add a completely unrelated sub plot/second case. When that case comes to Holmes you can see the possibility of it, but it could also be a regular case. But 142 pages in the author decides to go full woke agenda. It is a unnecessary reach and doesn’t even flow well. And like I mentioned above, is completely unattached to the original storyline. Adding agendas to books, simply to tick a box of your being aligned with current social relevancy is poor writing.
Profile Image for Lauren Stoolfire.
4,941 reviews303 followers
December 25, 2022
I received an ARC from NetGalley in exchange for an honest review. Review to come.

What Child is This? (A Sherlock Holmes Adventure #5) by Bonnie MacBird was easily one of my most highly anticipated reads. I'm so lucky to have been approved for this ARC via NetGalley because it totally lived up to the hype I'd built up for it. I love this author's take on Sherlock Holmes and John Watson. They feel very much like Arthur Conan Doyle's originals, and she's still able to keep them fresh. I know I've said this with every book, but this series just keeps getting better and better as it goes along. I'm not always a fan of holiday themed stories, but this was just delightful from the world-building of Victorian era London to our cast of characters. If you're a fan of Jeremy Brett's Holmes and David Burke's Watson, you can't miss this book. I hope we'll get to visit these characters again in the future.
Profile Image for Connie.
464 reviews22 followers
September 23, 2022
I had been looking forward to reading this, unfortunately unlike Bonnie MacBird's previous Sherlock Holmes books this left me feeling a bit flat. Sherlock has two cases to investigate, but I had solved them long before the reveal.
However I did really like the illustrations.
If all you want is an easy read, then this is for you.
Thank you Netgalley and Publisher for the ARC
Profile Image for Mongorzel Stepowy.
86 reviews
January 31, 2025
From today, it is the best Christmas book in my opinion. Better than "Christmas Carol" with better Ebenezer Scrooge in a lead.

The climate is wonderful, the cases simple, but gripping and the characters well written. My favourite (except for Holmes and Watson, of course) was propably Peter. I feel sympathy for him and kind of respect. I can only imagine, how hard is decision to leave your child with strangers knowing that you never give it that what it gets from adoptive parents. And he... he is a good man, who just lost himself and just love his son, which he can't have.

The ilustrations by Frank Cho were wonderful and he is such a great ilustrator. I think he is Sidney Paget our times. My favourite was this from chapter "Baby Village". It was kind of... melancholy? I don't know, but it affected me and... just was and is my favourite.

So on the next Christmas you must sit in chair with plate of gingerbread, glass of tea, cocoa or something harder and read this book listening "God Rest Ye Marry Gentleman". It will be the greatest Christmas in your life.
Profile Image for Cherie.
1,345 reviews141 followers
January 28, 2023
Great Christmas time story!
I enjoyed the terrific illustrations too.

I hope to see more stories in the future as this is the last one published.
Profile Image for Caitlin Gonya.
519 reviews6 followers
October 9, 2022
It’s the season of peace and goodwill, but a Victorian Christmas is no holiday for the world’s most popular detective in this new book from Bonnie MacBird, author of the bestselling Sherlock Holmes novel Art in the Blood.

It’s Christmastime in London, and Sherlock Holmes takes on two cases. The angelic three-year-old child of a wealthy couple is the target of a vicious kidnapper, and a country aristocrat worries that his handsome, favourite son has mysteriously vanished from his London pied à terre. Holmes and Watson, aided by the colourful Heffie O’Malley, slip slide in the ice to ensure a merry Christmas is had by nearly everybody . . . (Goodreads synopsis)

I have read one of Bonnie MacBird’s previous Sherlock Holmes novels prior to this one, so I must admit that I did not have the complete backstory for their young friend Heffie. That did not, however, take away from the story at all, as it was obvious that Heffie had originally been a part of Sherlock’s Baker Street Irregulars network.

There were 2 mysteries, and I am somewhat disappointed to say that I had figured out both solutions before the ending. However, I still enjoyed Holmes (and MacBird’s portrayal) and his empathy towards the individuals. Sherlock may not view it as such, but Watson and loyal friends do.

Jean Vidocq also makes an appearance, and I really wish the author had given the reader the scene for the thrashing, instead of just telling us. I found it interesting that the English servants would prefer Holmes over Vidocq, but that Lord Endicott would refer to Holmes as an amateur. Guess it was one to show that the “below stairs” were/are more sensible to life than the “above stairs.”

Overall, I rate this novel 5 out of 5 stars, because it is a great Christmas mystery read filled with intriguing and lots of emotion.
Profile Image for Kara Linaburg.
Author 5 books209 followers
December 26, 2023
I enjoyed the character and world, which held a very similar flavor to the original stories. The language and writing style was a bit modern at times, but that didn't bother me much and allowed the book to be very readable. Sherlock and John also remained true to the original but I had a very BIG reason I didn't like this read: it never made Sherlock smart. I love seeing him deduce from pure logic, and while Sherlock's personality remains the same -- we don't get to see his smarts. We love Sherlock Holmes because we want to see how he solves the mystery and I felt like we weren't getting that.
On top of that, the longer the book went on, the more boring it got. Sherlock wasn't deducing really anything and the plot felt a bit stale.
If you aren't looking for Sherlock's smarts here or a super thrilling read and just want to hang out with Doyle's characters for a a Christmas season, you may enjoy it, but it wasn't for me.
6,002 reviews69 followers
April 17, 2023
Dr. Watson is visiting Baker Street over the Christmas holidays, trying to bring his friend Holmes some holiday cheer. But Holmes is having none of it, until he helps rescue a small child from a brazen daylight kidnapping attempt. To Holmes, the only way of ensuring the little boy's safety is finding the kidnapper and his motive. But things are not always what they seem, as is proven when he also accepts the case of a young man who has disappeared from his flat and stopped writing to his adoring parents. Holmes employs Hepzibah, better known as Heffie, to help in both cases.
Profile Image for Matt Witten.
Author 11 books177 followers
July 6, 2022
This is such a sweet, fun novel. It has all the virtues of Bonnie MacBirds' other Sherlock Holmes novels - fast pace, entertaining and complex characters, and a social conscience that links issues in Holmes' time to issues in our own time. In addition, What Child Is This? shows a deeply caring side of the man.
Profile Image for Stacy Wilson .
327 reviews175 followers
December 9, 2023
I want historical fiction to be authentic to the time. This very much feels like it was written today. Sherlock makes a decision that I honestly don't think he would make.
Profile Image for Staceywh_17.
3,885 reviews12 followers
October 17, 2022
Macbird brings Christmas alive and takes us through the streets of Victorian London with Holmes as we try to solve the two mysteries.

This is the fifth in the Sherlock Holmes Adventure series. Sticking with tradition the story is narrated by Sherlock's trusty sidekick Watson.

The descriptions of a Victorian Christmas are absolutely gorgeous; clove studded oranges, mulled wine, candies and the candles on the tree.

Well written, obviously with some great main characters in Holmes and Watson. And a great new take on recreating our favourite detectives with some fantastic new stories and introducing them to new eyes.

Macbird's passion for Holmes shines through on every page and I can't wait to devour the other books in the series.

Many thanks to Random Things Tours for my tour spot.

Rating ⭐⭐⭐⭐⭐
Profile Image for Eleanor.
14 reviews1 follower
December 4, 2022
I devoured this book in less than 2 days. Macbird is one of my favourite Holmes authors, and this latest in her series doesn’t disappoint! The cases were clever and emotional, and really showed the responsibility that Holmes had when deciding how to deliver his accusations, with the impact that these have on the victims and people involved in the crimes. It was heartwarming and heartbreaking in parts, and as always I love Watson and Holmes’ chemistry. I also love how Macbird is gradually exploring Holmes’ background more, and I hope that in future instalments we get to learn even more about his past.
Profile Image for Teresa Rokas.
84 reviews5 followers
December 29, 2022
Holmes and Watson solve 2 mysteries during the Christmas season. The author channels Conan Doyle's writing style. The atmosphere of a Victorian Christmas is captured.
521 reviews7 followers
November 29, 2023
Fun book to read

I enjoyed this book. I like the Holmes Christmas stories. Good and fun plot. I will read more in this series
Profile Image for Laura F.
14 reviews
January 4, 2026
Nice story, easy to read and a cute book for the Christmas break. Some of the plot was predictable, some not. I got this as a «blind date with a book» and was not disappointed.
Profile Image for Brianna Shrout.
381 reviews25 followers
January 2, 2023
I received this book as an Advanced Reader Copy from HarperCollins Publishing. All thoughts and opinions are my own.

The famous Sherlock Holmes is at it again and this time, just in time for Christmas. Christmas spirit won't get in the way of this Scrooge when it comes to solving mysteries. This Scrooge is the best known detective and for good reason. That's why, this Christmas season, Holmes takes on two new cases, both of loving parents concerned for their children. Can Sherlock "Scrooge" Holmes save Christmas for these two families before it is too late? Can his colleague and friend, Dr. Watson, help Holmes find that little spark of Christmas spirit buried in him somewhere?

"What Child is This?" is my first novel by Bonnie MacBird and my very first Sherlock Holmes novel as well. Don't get me wrong; everyone and their mother knows who Sherlock Holmes is. Am I the only one that pictures Robert Downey Jr. when I think of Sherlock Holmes? Just me? Okay...anyway!

The book is told from the perspective of Dr. Watson. I was not fully into the book at first. As both Watson and Holmes are extremely smart and have amazing vernacular, the language was at times a bit hard to wrap around. But after the first couple chapters and getting used to the verbiage, I really started getting into the book.

As Holmes and Watson are walking along Oxford Street, Holmes being his usual "ba-humbug" self, that happen across a man seemingly trying to rip a young boy out the arms of a woma and her maid. Of course, as good citizens, Watson and Holmes immediately jump in to try to help. The boy is reached away from the man and as the man takes off, Holmes attempts to run after him and capture him for questioning. Upon returning to 221B Baker Street, it seems as though Holmes' mind is already stirring around, trying to figure out the mystery. He even predicted Lady Endicott showing up to 221B looking for Holmes' help. To Watson's delight and a bit of confusion, Holmes agrees to take on the case.

As the duo is leaving, they are approached by another Lord, demanding their help with his "missing" son. His youngest son and his and his wife's favorite child, has seemingly gone missing after moving to the London area. The father has called on the son numerous times only to be met with the valet/bellman telling him that his son is out or some other excuse. The mother is absolutely distraught and extremely worried about her son. Again, much to Watson's surprise, Holmes agrees to take the case.

As mentioned, the verbiage of the book was very difficult to get into at first. But as the book progressed, it began easier and easier to understand. While I did enjoy this book, it flashed back too many times to other Holmes' stories and while it is stated that the books can be read in any order, it definitively did feel like at times I was missing out on something that had happened in a prior novel. I've never been a huge fan of Sherlock Holmes and it's not completely Sherlock's fault. I've just never been super big into detective stories. But as one of my first Holmes novel and one of my first full length detective novel, I did enjoy it.

The timeline seemed to jump so often and there was so many things that seemed to resolve themselves before you know it without any lead up or explanation. I felt lost at times and didn't like the way that the novel was written as if Watson, the narrator was breaking the 4th wall and at times felt like he was directly talking to the audience. I felt that it took away from the story and did not enhance the story.

Overall, it was a good read and I did enjoy it. Would I be willing to pick up another Holmes novel? Yes. But would I be willing to go out of my way to get any new Holmes novel? No, I don't think so. I was hoping this would create a Holmes fan out of me but it definitively did not do that.
Profile Image for CJ.
397 reviews1 follower
December 28, 2025
While the writing style may be a bit reminiscent of the original, the 21st century lens given throughout the story diminishes this holiday mystery for Holmes.
5 reviews
September 9, 2022
I enjoyed this story immensely. At the story's core is a double mystery centred around a vicious kidnapper and a missing young aristocrat. Both pull Holmes out of his festive funk and into the streets. When reading a Holmes story from outside the canon, I still expect to find clever deductions, and I'm pleased to say they're plentiful here, along with some vivid, slightly Dickensian side characters, the author's trademark humour, and a few surprises along the way. These elements combine beautifully and result in a highly enjoyable Christmas read that would have an excellent gift for the Holmesian on your list. Frank Cho's illustrations make for a delightful bonus.
Profile Image for Shawn Bain.
Author 1 book4 followers
December 30, 2024
I love Christmas, and I love Sherlock Holmes. Imagine my excitement when I found a book that married these two loves of mine. It has such a gorgeous cover too.

While the imagery is fantastic, told succinctly and vividly capturing Christmas essence with most scenes, What Child is This falls short in many other areas. The story is intriguing enough, and Holmes’ ability of deduction and picking up clues is fun in the story. So What Child is This started out with promise.

The character of Holmes leaves something to be desired. He is often much more cheerful and jovial than Holmes in his original work. There might be spurts of this in the classics, but his serious, often abrasive, demeanor is not captured well in this book.

Now for the crux of my rating. What Child is This was lining up for a solid three or four-star rating, but LGBT nonsense was the focus of the story. It’s not only that it’s difficult to find stories that aren’t saturated with this junk, but transgender nonsense didn’t even exist in the time period this is written for.

Truly sad, because this book had a lot of potential. I won’t be recommending it for anyone.
Profile Image for Jim Lunsford.
2 reviews
September 9, 2022
What I love most in this series is the humanity that is so skillfully written into all of these very familiar characters. I have loved getting to know them all over again, and this volume gives even more. Such a wonderful read!
Profile Image for Rhiannon.
194 reviews
December 25, 2022
Some clever mysteries in this! Clearly I’m getting a little better as my theories were correct. I love MacBird’s Holmes stories and as always, she captured Holmes and Watson perfectly. This one didn’t have any clear insights into Holmes’ past as in the other novels in the series, but there were some gentler sides to him in this. I hope that there’s more to come in this series!
Profile Image for M.L.D..
Author 28 books26 followers
January 20, 2025
Not sure I'll try other books by MacBird.
Profile Image for Marlene.
3,528 reviews248 followers
November 29, 2024
I wasn’t expecting to find a Sherlock Holmes story to include in my personal Ho-Ho-Ho Readathon. Not that I wasn’t willing to, considering how much I love Sherlock Holmes stories, but rather that Holmes can be a bit of a curmudgeon at the best of times.

He may not be, in any way, a miser like Ebenezer Scrooge but he’s certainly more than capable of bah-ing and humbug-ing with the best of them. Or the worst of them as the case might be.

And then I remembered that the Holmes series I just started earlier this month with Art in the Blood, included a Holmes’ Christmas tale, and to paraphrase the Great Detective himself, the game was afoot.

What Child is This? (yes, the question mark is part of the title and it’s driving me batty) connects two stories with loosely similar themes under the banner of the holiday season and runs away with them. Or sets them on fire. Or a bit of both.

The Marquis of Blandbury, Henry Weathering, comes to Holmes because his adult son Reginald hasn’t written to his mother in weeks, and the woman is beside herself because it’s so very much not like him. Even dear-old-dad, who does not seem the worrying sort, is worried – if only second hand. He’s more concerned about his wife’s peace of mind than his son’s current whereabouts but even the rather blunt instrument that is the Marquis knows that something isn’t right and he expects Holmes to find out precisely what.

The other case, the much more serious case, is one that literally drops into Holmes’ and Watson’s laps. Or at least falls right into their hands. They witness a well-to-do woman and her attendant get attacked by a crazed assailant who knocks them both over as he plucks the woman’s little boy right out of her arms. And attempts to flee with the child through the crowded streets.

With Sherlock Holmes in hot pursuit, Watson attends to the women who have been so grievously assaulted. Holmes doesn’t manage to catch his man – but he does successfully rescue the little boy and restore him to his mother’s waiting arms.

The two cases don’t have anything in common beyond the fact that both originate with potentially missing sons. Of course, Holmes, with Watson’s able assistance, solves both cases.

But neither case goes to any of the places that the reader originally believes they will, and the solutions are far from orthodox. They are both cases where Holmes displays the heart that he would claim that he does not have – with his dear friend Watson there, as always, to record that he does.

Escape Rating A: I loved this – and I think I loved it more because it feels like the characterizations of Holmes and Watson read like they owe a lot more to the screen adaptations of the past OMG 40 years, starting with Jeremy Brett, than they do to the earlier portrayals of Basil Rathbone and even the original Holmes canon itself.

Not that the two cases aren’t every bit as confounding and convoluted as any of the Holmes’ stories penned by Conan Doyle, but rather that the characters of our two protagonists have been made just that bit more human and more sympathetic than the original ‘thinking machine’ and his idiot sidekick.

Instead, this is a portrayal where Holmes is aware that he is just a bit ‘different’ from most people, and where Watson knows and understands that part of his purpose in Holmes’ life and in their long friendship is to allow Holmes to explain his deductions – even as he stinks up their apartment with his experiments.

There is a mutual respect in that friendship – a respect that would have had to have existed for Holmes to have tolerated Watson’s inability to follow his genius and for Watson to have tolerated Holmes’ frequent high-handed treatment of him. There’s also an awareness on Watson’s part that these are NEVER fair play mysteries. Holmes always keeps secrets even when that lack of knowledge might endanger Watson’s life.

The solutions to both of these cases are extremely unorthodox – which made them that much more fascinating. Something that was made even more clear to me as I listened to The Adventure of the Blue Carbuncle, the canon story with which this adventure was very loosely in dialogue. THAT Holmes would never have come to either of these resolutions, but THIS Holmes is all the better for doing so.

I liked my first taste of this author’s Sherlock Holmes Adventures in Art in the Blood, but I really got into this interpretation with this Christmas story. There are three stories between Art and this one, and the events of those stories was teased just a bit in this one – more than enough to make me eager to read them.

And I’m definitely looking forward to the latest entry in the series, The Serpent Under, coming in January!

Originally published at Reading Reality
Displaying 1 - 30 of 135 reviews