“I love the examples of how people’s minds work and all the charts and diagrams.”--Charlotte, 13

“The twists and turns of the plot are very exciting, and I like the way you gradually get to understand what has happened.”--Tessy, 10

“I felt very sorry for Franklin when he was so misunderstood by Rachel. Thank goodness Sergeant Cuff could work out what had happened.”--Ian, 12

“This is one of the scariest books I’ve ever read. I loved it!”--Alison, 12

“What happened to Dorian really makes me think about how important it is to care about staying young and beautiful forever.”--Stacey, 13

“The story got more and more scary. I guessed who did it, but not how or why.” – Grace, 9

“What a lot of blood for one story! Sherlock Holmes is very clever to know chemistry and German.” – William, 11

“I really liked the map, and the secret signs. Toby the tracker dog is very clever to help Sherlock Holmes.” – Mehtan, 10