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Lock and Key #3

The Final Step

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“Will leave you dying to know more.” —Rick Riordan, author of the #1 bestselling Percy Jackson series The  New York Times  bestselling author of the Peter and the Starcatchers and Kingdom Keepers series, Ridley Pearson, brings us the thrilling conclusion to the Lock and Key trilogy. Before James Moriarty and his sister Moria enrolled in Baskerville Academy, they were inseparable—as close to best friends as a brother and sister could be. But since setting foot on the boarding school’s campus, James has been different. At Baskerville, he’s become cunning, deceptive, ruthless, sometimes reckless. And now that his roommate Sherlock Holmes has been expelled, there’s no one left to help Moira figure out what’s going on with her brother or to uncover the connection between a recent string of deaths. To Moria, it seems obvious that someone has it out for the Moriarty family. First their father and then their family driver and now their legal guardian—clearly something is afoot. But to get the answers they need, they’ll first have to deal with an incriminating photograph, secret safe houses, and powerful enemies. It’s a highly original and satisfying take on the Sherlock Holmes series as only master of suspense Ridley Pearson could envision. As Rick Riordan, author of the Percy Jackson series, says, “This tale will change the way you see Sherlock Holmes and leave you dying to know more.”

400 pages, Hardcover

Published October 30, 2018

21 people are currently reading
327 people want to read

About the author

Ridley Pearson

187 books2,106 followers
Ridley Pearson is the author of more than fifty novels, including the New York Times bestseller Killer Weekend; the Lou Boldt crime series; and many books for young readers, including the award-winning children's novels Peter and the Starcatchers, Peter and the Shadow Thieves, and Peter and the Secret of Rundoon, which he cowrote with Dave Barry. Pearson lives with his wife and two daughters, dividing their time between Missouri and Idaho.

Also writes Chris Klick mysteries as Wendell McCall.

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5 stars
70 (29%)
4 stars
87 (37%)
3 stars
61 (26%)
2 stars
13 (5%)
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3 (1%)
Displaying 1 - 30 of 30 reviews
Profile Image for Ken W.
454 reviews1 follower
June 10, 2024
This entire series was a fun new take on teenage James Moriarty and Sherlock Holmes! I enjoyed every bit of it! 5 stars!
Profile Image for Sharon.
Author 38 books398 followers
January 7, 2022
3.5/5 stars

I think, at the end of the day, this series was just not my cup of tea. After three books, the initial mystery of "where did Mom go" is finally resolved, but some of the other subplots are still hanging out there open -- and I just don't care enough about them to keep going.

James has turned into a two-dimensional villain, Sherlock's character is still pretty undeveloped, and Moria has become a plot device to be threatened if James doesn't cooperate with some of the other criminal elements with whom he's been consorting.

I know I'm not the intended audience for these books, so maybe that's part of the problem here.
Profile Image for Susan.
23 reviews
May 22, 2020
I have thoroughly enjoyed this middle years mystery/adventure series featuring contemporary versions of teen Sherlock Holmes, James Moriarty, and the wonderfully spunky and clever Moria, younger sister of James and pal of Sherlock. Set mostly at a boarding school the dialogue between Sherlock and Moria is wonderfully entertaining and the plots are terrific. Loads of fun to be had here. If you like these, do try the Charlotte Holmes series for YA readers by Brittany Cavallaro, which is darker and far grittier, but equally entertaining.
Profile Image for Kathy Davie.
4,876 reviews736 followers
December 2, 2018
Third and last in the Lock and Key thriller-mystery series for middle-grade readers and revolving around a contemporary Moriarty and Holmes in an American boarding school during the summer term.

My Take
Maybe ya gotta read the first two in the series to get it. I sure didn't, but then I only read The Final Step, which is the third and last book.

I had several problems with the story. One, I couldn't believe that Pearson had written such dreck. Two, I did not make that connection between Moriarty and Sherlock among the three main characters. Maybe I should have figured it out since Pearson does use a third person dual subjective point-of-view mostly from Moira's perspective, although James has plenty of scope as well. And Pearson does emphasize criminal organization and Holmes. But I do hafta say I never really saw Holmes and Moriarty as friends at a school.

Sure, I'll grant you that it is a modern twist on the Sherlock Holmes meme. In fact, it was so modern I didn't get it. I know, I know, I'm whining. Yes, Pearson did mention their last name right at the start. So what. It's a last name. There still wasn't anything to make me think ooh, Holmes! As for James being so mean, etc., where? He was a jerk, but it was so mild and he could be any teenager. If it was because he's now the leader of the Scowerers, say so. Pearson leaves so much background material out, that it's impossible to make sense of so much of it.

It was a heck of a lot of tell and very little show — I'm giving the story the benefit of the doubt on that score. Most of the background characters Pearson includes in the form of many of the students and school personnel felt like it was thrown in "for color". As for the way Pearson kept leaping about in the book, leaving me wondering what the heck was happening, yeah, I'm very confused and frustrated. I had to keep checking the cover to remember who wrote this.

What was all that about the woman in the "center"? Why? Why did they have to break her out?? If it was simply to keep her safe, all I can say is WTF?? There are betrayals in here that don't make sense. Why wasn't Moira involved in the Scowerers? Why isn't there any reasoning behind James' going to the dark side? What exactly are the criminal activities of the Scowerers?

Don't waste your time, even if James does do some clever swearing: Cheese-Its. Cripes. Yeah, I'll give you "cripes".

The Story
Before James Moriarty and his sister Moria enrolled in Baskerville Academy, they were inseparable — as close to best friends as a brother and sister could be. But since setting foot on the boarding school’s campus, James has been different.

At Baskerville, he’s become cunning, deceptive, ruthless, sometimes reckless. And now that his roommate Sherlock Holmes has been expelled, there’s no one left to help Moira figure out what’s going on with her brother or to uncover the connection between a recent string of deaths.

To Moria, it seems obvious that someone has it out for the Moriarty family. First their father and then their family driver and now their legal guardian — clearly something is afoot. But to get the answers they need, they’ll first have to deal with an incriminating photograph, secret safe houses, and powerful enemies.

The Characters
The fourteen-year-old James Keynes Moriarty is a student at Baskerville Academy along with his twelve-year-old sister, Moira, a.k.a., Scooter, who enjoys working in the darkroom. Their father died last year in a fatal fall, which makes James the new head of the Scowerers. Their mother left them years ago.

Ralph had been their beloved bodyguard/driver who also died. Lois Agnew is their former nanny and their father's secretary; now she's been hired by the kids' legal guardian to care for them. Conrad Lowry is the family lawyer and legal guardian.

Baskerville Academy is...
...a boarding school founded by the Moriartys' great-great-grandfather. Crudgeon is the headmaster and deputy governor of the Directory. Mr Hinchman is the boys' varsity soccer coach, who likes to hunt with his dog, Diego. Espiranzo is undercover as a groundskeeper with his main job to keep an eye on James. Mr Royce runs the Starcatcher Club. Ms Pancell is Stacey's dorm mistress; Ms McKower is Lexie's dorm mistress. Mr Cantell is a hall monitor. Mrs Furman.

Alexandria "Lexie the Loser" Carlisle used to be James' girlfriend. No, we have no idea why she "used to be" nor do we know why she's still hanging around. Sherlock "Sherlost" Holmes, a.k.a., Lock, used to be James' roommate who brought out the best in James. Until Sherlock was expelled. Who knows why he was expelled and why James doesn't/does like him?

Maverick Maletta, Ryan Eisenhower, Stacey Levin, Claudette, and Leith Gaines are some of James' gang? confederates? Natalie, Moira's roommate, has a nice camera. Bret Thorndyke is huge. Carol Johansen is a tall girl from Minneapolis. Charity Kennedy and Tiffany Randall think DeSaun Campbell looks good in a swimsuit. Leilani. George Platen is a sad dog. Tim Wormser is a set designer for school plays. Ruby is a whiz on the computer.

Bricks is the school dorms. A wombat is a nickname for dorm janitors.

The Scowerers is...
...a criminal organization based in the school basement and led by James. The Directory is their board of directors that includes Kennedy Wilkes, Marion Finley, Roger Albright is the secretary regent, and Ewa Latak serves as parliamentarian.

Mathias Hildebrandt used to be with an FBI director who blackmailed his way into the Scowerers. Squeaky Soles and Swishy Pants are Hildebrandt's bodyguards.

Detective Superintendent Colander is with Interpol.

The Meirleach appear...
...to be the Scowerers' rivals in Europe. Magnus is one of their agents.

Clarence Offel is the manager of a jewelry store. Ginny Lonstadt runs Sugar Maple Cleaners. The Gadwall Specialist Center is a huge institution where Marvin Hoshcenfelt is a pharmacy tech while Dr Kamat is an admitting doctor. Harold Colletti, a security guard, died on the scene.

The Cover and Title
The cover does reinforce the series name with that huge keyhole James stands inside of at the bottom of the stone steps. He's almost in silhouette wearing that trench coat in his superhero pose with that bright green light flaring around him. At the very top in yellow-green is an info blurb with a slightly embossed author's name immediately below it. Underneath that, in the largest text (which really ticks me off, as I always think it must be the title!!) is the series information in an embossed and textured white. The teeny, angled title is also in white below James' left fist. At the bottom is a testimonial with the first line in white and the remaining two lines in an orange-yellow against a hazy rust background.

I'm guessing that the title is all about The Final Step taken to interrogate the impostor.
Profile Image for Shena Leonard.
261 reviews3 followers
November 5, 2018
I think the Star Rating System is very subjective. I often read reviews and think I would have given it a different number of stars than the reviewer did based on what they wrote about the book. With that in mind, I decided to share how I define my ratings so you’ll understand my reviews. 😊

⭐️ This Book is terrible. If I were capable of quitting books, I definitely would have quit this book!

⭐️⭐️ This Book was just ok. I got through it, but I don’t feel I got a lot of value from it. I’ll be fine forgetting about it.

⭐️⭐️⭐️ This book was good. I enjoyed it, and never felt the need to put it down. I would recommend it to people I think would be interested in it. (This is the category most books I read fall into.)

⭐️⭐️⭐️⭐️ This Book was REALLY GOOD! I slacked on other commitments (and sleep) to finish this book! I LOVED this book and will tell everyone I know to read it.

⭐️⭐️⭐️⭐️⭐️ This Book is Obsession and Fangirl Worthy!! I will read it multiple times, create art about it, and make a T-shirt based on it. I will do my best to make everyone I ever talk to read it.
Profile Image for Allie.
273 reviews3 followers
September 14, 2020
I thought this was the weakest book in the series. The pacing felt really slow, and there were odd gaps in the action. One chapter could end in the middle of a high-stakes chase sequence, only to start the next chapter three weeks later, with a few sentences trying to sum up what happened in between. This type of writing happened in all three of the books in the series, but seemed particularly noticeable in this one. The ending was really underwhelming.

Other quibbles -- Sherlock was barely in this book and had almost no effect on the plot. After the friendship developed between him and Moira, it was disappointing to see that completely abandoned by the author in the final book.

I never really understood why the series tried to force Moira's perspective, since it didn't stick with her anyway. It seems like an omniscient narrator would have provided a more consistent voice for the whole.

I also never got the odd choice to set the books in a contemporary time period (with references to Snapchat and the Harry Potter series), but to use historical characters. It gave a weird dissonance to the story. Sherlock is such a person of his time period, that I would rather have read about him as a child in the 19th Century, or, abandon the use of Sherlock and Moriarty all together and just have a story about rival boys and secret societies in modern times.

Overall I wouldn't recommend the series.
Profile Image for Bookishly Smart.
2 reviews
July 20, 2019
I enjoyed reading this trilogy IMMENSELY! The conclusion to this series was extremely gratifying to read and had me constantly flipping each page to discover what was going to happen next. It is important to note that it is written in the perspective of Moria (James Moriarty's younger sister) which will probably clear up some "inconsistencies" with the writing style as the story goes on. The story is better understood once you read the first part of the book (a part I almost happened to ignore) where Moria addresses the reader saying,

"Dearest Reader, The following is as best I remember it. I've used a variety of sources to re-create the events. When I wasn't actually in the room, I've interviewed witnesses who were. I've studied texts, photos, and my brother's writings in his diary.Harder than tracking the events were keeping my emotions out of the passage...."

It would also be wise to read the first and second book before reading this one. I promise you won't regret picking up this thrilling trilogy that puts an interesting twist on the well-known story of Sherlock Holmes.
11 reviews
January 23, 2020
Lock and key is a book about Sherlock Holmes and James Moriarty as kids at Baskerville academy. This is the third and final book in the series and follows James as he tries to solve is fathers death. Throughout this book James keeps getting deeper into a criminal organization and starts to transform into the villain he is in the original books. This book follows James and Sherlock, but is told from the perspective of Moria Moriarty, James’ sister. Most of the book takes place at Baskerville Academy, but there are also parts in Boston.
In my opinion this book was a little overdone. It should be said that it is hard to write a spin off of Sherlock Holmes because he’s such a well known and liked character. I thought this was a good book by itself, but it couldn’t really live up to a Sherlock Holmes book. This is a good book for people who like easy books, but challenging mystery’s.
Profile Image for Jeff Miller.
243 reviews16 followers
February 3, 2019
I almost gave this four stars but couldn't quite do it. The action in the story starts quickly and I had a hard time putting the book down because I wanted to see what happened next. However, the resolution of the story didn't resolve everything in my mind. It was not explained well how Ralph "came back from the dead." Perhaps I was reading too fast, but it seemed like some of the plot resolutions were forced.
This entire review has been hidden because of spoilers.
372 reviews
March 15, 2019
Sherlock Holmes is not in this one until the last part. James want to find out who killed his father and their friend Ralph. He finds out some interesting things as he plays detective with out Sherlock. Some friendship are made and some end, but James must know the truth and he will do anything to find it. Moria thinks that her brother has changed and she doesn't like the change. They finally find out what happened to their Mother.
Profile Image for Barb.
Author 5 books43 followers
March 31, 2022
THE FINAL STEP, book 3 in the Lock and Key series wraps up the mysteries plaguing James and Moria Moriarty and their friend Sherlock Holmes -- namely, who killed Mr. Moriarty. This twisty mystery most definitely is an upper Middle Grade read and maybe crosses over into lower YA for some violence and more mature themes. Thinking back to my 12 or 13 year old self, I know I would have devoured this trilogy and then wished for more.
Profile Image for Meghan.
102 reviews
July 8, 2019
I had the same problem with this book as I did with the second in the series. Again, there were several inconsistencies from one book to the next. The story also just seems to end. While you've seen James grow into who he will ultimately become, his sister and Sherlock seem to just be along for the ride. With no parents and being expelled from school, how is Sherlock supporting himself and continuing his education? What ultimately makes him turn on James? And most importantly, what about Moria?
Profile Image for aasiyah m. ✴︎˚。⋆.
163 reviews
July 26, 2023
I have never been so confused with the ending of a book. maybe it's just me, but I feel like so many loose ends to this book could be explained in another book. I feel like we should have a Lock & Key: The Continuation series and kind of continue Moria, James, and Sherlock's stories as they continue growing, or at least answer some questions that I know I still have.
Profile Image for Tobreth Hansen.
307 reviews6 followers
January 23, 2019
Some of the premise, like a 14 year old boy being given leadership of a secret society, were hard to swallow. But, it was fun. The first was the best. By number 2 you really loathe James, but he is the ultimate villain, so maybe it could never have been written as anything other than sad.
Profile Image for Kristian.
387 reviews2 followers
September 8, 2019
This is a fun series. Easy to read and follow along. This book doesn't have as much Sherlock, but then I always thought the series was more about Moria. She is a very strong character and I he mystery is a good one. Great way to get younger crowds interested in Sherlock and Moriarty.
Profile Image for Diana Gagliardi.
Author 2 books7 followers
February 27, 2019
Is this book three of a trilogy? The story came to a conclusion so...yes?

Enjoy!
Profile Image for Cecilia Rodriguez.
4,446 reviews57 followers
August 14, 2019
Partly narrated by Moria Moriarty, Pearson's mystery has lapses in action, making the pace of story a little slow.
Profile Image for Ileana Gallegos.
81 reviews25 followers
November 8, 2021
its such a let down for the series the chapters are like 5 pages and it mainly focuses on james which is not a problem but still i never understood the whole point of the series
Profile Image for Jessica.
115 reviews
February 1, 2022
It was ok. Kind of a let down though. I wish Lock was in it more.
This entire review has been hidden because of spoilers.
Profile Image for Jennifer Conrad.
361 reviews7 followers
March 30, 2022
This book was on par with the other 2--but Sherlock wasn't in the majority of it. You finally get to the bottom of who killed Mr. Moriarty, but it doesn't really feel that suspenseful or surprising.
Profile Image for Eden Michelle.
46 reviews
July 12, 2023
I was so sad that Moria and Sherlock’s relationship/friendship didn’t work out I was rooting for them! All in all really great book with a investing story and intriguing plot twists.
This entire review has been hidden because of spoilers.
Profile Image for Taylor G.
221 reviews1 follower
November 4, 2025
I felt a little bit disappointed by the ending so 3.5 stars
I did still enjoy the book
I love mystery stories and this one was entertaining
Profile Image for Saniya R.
34 reviews
September 18, 2023
This book wasn’t as good as the first one, but still interesting.
p.s. Read the first one! -Sep 9, 2022 - Edited Aug 29, 2023
Profile Image for Emily(Marauders version)🎧⭐️.
80 reviews53 followers
September 10, 2021
I’m-im shooketh.

I read this book about three months ago so I’m a bit late to writing a review, but in that time I have read many more books and none of them have left such a lasting impact as this series did. I still get shivery when I think about reading these in my bed and screaming silently at all the plot twist and overall the feels were amazing 🤩 I didn’t like the romance part of it but it was still a fANTASTIC book. Definitely my 5th favorite book series of all time!!! And amazing read but I will say that I would not reread them just because the plot twists were what made the book good. Anyways, hope u enjoyed the review! ❤️-𝐸𝑚𝑖𝑙𝑦
64 reviews5 followers
September 13, 2024
I loved it, I finished it in two days, buuuuut…
(1) I was fairly confused about the confessions made at the end.
(2) Sherlock and Moria break up? Nooo! 😭😭😭😭
Sherlock was my absolute favorite character and seeing him with Moria made me so happy and wanting for more, and having them just fall apart like that… heartbroken.
This entire review has been hidden because of spoilers.
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