Foundation and Empire
Isaac Asimov
Foundation (Publication Order) (2)
The Magic of Recluce
L.E. Modesitt
Recluce (1)
Runner of Pern
Anne McCaffrey
Pern Novellas (4)
Children Of Dune
Frank Herbert
Dune (3)
The secret adversary
Agatha Christie
Tommy and Tuppence (1)