.jpg)
The Improbable Tales of Baskerville Hall, Book 3:
The Valley of Lies
In the thrilling and exciting conclusion to the middle grade adventure that is the Improbable Tales of Baskerville Hall trilogy, Arthur travels to the Lakes, a place more mysterious than the enchanting Baskerville Hall itself, and must do the unthinkable: betray his friends and Sherlock Holmes or pay the ultimate price. Perfect for fans of the Winterborne Home for Vengeance and Valor series and the Mysterious Benedict Society series.
Jacket art © 2025 by Iacopo Bruno
Visual Direction from Laura Mock and Amy Ryan
Early Reviews
"Baskerville Hall [is] right at the top of the most intriguing school list with Hogwarts and The School of Good and Evil."
- KATHRYN LASKY, Newbery Honor Award-winning author
"A tantalizing playground for inquisitive minds."
- PUBLISHERS WEEKLY (starred review)
"A well-paced, exciting story in which stalwart heroes attempt to outwit inscrutable villains...Readers who love period mysteries and adventure stories are sure to enjoy."
- ALA Booklist (starred review)
"A delightful twist on the Sherlock universe. Hand this to any young reader, and watch the pages turn."
- SCOTT REINTGEN, Indie bestselling author of the Talespinners Series
"Baskerville Hall is a bold and thrilling reimagining of Arthur Conan Doyle's early life, filled with students and teachers who the world would later come to know so well, including Dr. Watson, James Moriarty and, of course, Sherlock Holmes."
- The Conan Doyle Estate
Before there was a man named Sherlock, there was a boy called Arthur…
Arthur should be happier than ever. Professor Sherlock Holmes has accepted him into the esteemed Circle of Light, and his friendships are stronger than ever. However, Dinah Grey’s ominous letter and her dangerous hold over his little sister, Mary, have left Arthur riddled with anxiety. After the annual first-year retreat to the storied Lake District is announced, another letter arrives and makes the key to Mary’s salvation clear: Arthur needs to insert himself in Sherlock’s upcoming investigation…as Dinah’s spy.
While sticking close to Holmes on the trip, Arthur meets George Rankin, one in a long line of protectors of the Brazen Head, a powerful relic whose wearer can ask any question and have it answered. But there are more eyes on Sherlock and the relic than just Grey’s. Arthur will have to walk the thin line between truth and deception in order to save his sister, but it might cost him more than he realizes.