Sons of Fenris
Lee Lightner
Space Wolf / Ragnar Blackmane (5)
Sonya, Crane Wessleman, and Kittee
Gene Wolfe
Sophie's Dragon
Jory Strong
Supernatural Bonds (3)
The Sorcerer's Apprentice's Apprentice
David Bischoff
A Sorcerer's Treason
Sarah Zettel
Isavalta (1)
Soul Catcher
Deborah Smith
The Outsider (1)
Soul Enchilada
David Macinnis Gill
Soul Pipes
Ray Aldridge
Soul Song
Marjorie M. Liu
Dirk & Steele (6)
Soul Stealer
Martin Booth
Alchemist’s Son (2)
Soulmates
Mike Resnick & Lezli Robyn
Soulstice
Simon Holt
The Devouring (2)
Sovereign
Simon Brown
Keys of Power (3)
The Space Beyond
John W. Campbell, Jr.
Space for Hire
William F. Nolan
Sam Space (1)
The Space Guardians
Brian N. Ball
Space 1999 (3)
Space Hulk The Novel
Gav Thorpe
Space on My Hands
Fredric Brown
Space Rats of the CCC
Harry Harrison
The Space Vampires
Colin Wilson