The Vor Game
Lois McMaster Bujold
Vorkosigan Saga (6)
The Black Book
Ian Rankin
Leviathan Falls
James S. A. Corey
The Expanse (9)
The Mystery of Tally-Ho Cottage
Enid Blyton
Mystery series (12)
They do it with mirrors
Agatha Christie
Miss Marple (6)