Il re e l'impero
Harry Harrison & John Holm
Lo scheletro impossibile
James Patrick Hogan
Urania (739)
Man in the Middle
Brian Haig
Major Sean Drummond (6)
La Valle del Caos
Dürrenmatt Friedrich
Villainy Victorious
L. Ron Hubbard
Mission Earth (9)
Fortune of Fear
Mission Earth (5)
Black Genesis
Mission Earth (2)
Disaster
Mission Earth (8)
An Alien Affair
Mission Earth (3)
Enemy Within
Mission Earth (4)
Doomed Planet
Mission Earth (10)
Invaders Plan
Mission Earth (1)
Voyage of Vengeance
Mission Earth (7)
Death Quest
Mission Earth (6)