The Speed of Dark
Elizabeth Moon
Speech Sounds
Octavia E. Butler
Spectrum V
Kingsley Amis & Robert Conquest
Spectrum (5)
Spectrum of a Forgotten Sun
E. C. Tubb
Dumarest (15)
Spectres in the Dark
Robert E. Howard
Spectre of the Black Rose
James Lowder & Voronica Whitney-Robinson
Ravenloft (17)
Spectre
William Shatner & Judith Reeves-Stevens & Garfield Reeves-Stevens
The Mirror Universe Trilogy (1)
Phaedra Weldon
Zoe Martinique (2)
The Spectral Mortgage
Frank R. Stockton
Spectra
Vonda N. McIntyre
Specters of the Dawn
S. Andrew Swann
Moreau (3)
Specter Rising
Thomas E. Sniegoski
The Brimstone Network (3)
The Specter General
Theodore R. Cogswell
Spectator Sport
John D. MacDonald
The Spectacles
Edgar Allan Poe
Specimens
Fred Saberhagen
Specimen Days
Michael Cunningham
Notes on the Classification System
James White
Specials
Scott Westerfeld
Uglies (3)
Specialization
R. R. Winterbotham