The secret adversary
Agatha Christie
Tommy and Tuppence (1)
The Thirteen Problems
Miss Marple (2)
Ecologic Envoy
L.E. Modesitt
Ecolitan Matter (3)
Alcatraz versus the Scrivener's Bones
Brandon Sanderson
Alcatraz (2)
Shadow Of The Giant
Orson Scott Card
The Shadow Saga (4)