Betrayer of Worlds
Larry Niven
Fleet of Worlds (4)
So Long, and Thanks for All the Fish
Douglas Adams
Hitchhiker's Guide to the Galaxy (4)
Partners in crime
Agatha Christie
Tommy and Tuppence (2)
The Smallest Dragonboy
Anne McCaffrey
Pern Novellas (2)
The Emperor's Soul
Brandon Sanderson
Cosmere: Elantris (3)