The Fifth-Dimension Catapult
Murray Leinster
Tommy Reames (1)
The Fifth-Dimension Tube
Fifty Degrees Below
Kim Stanley Robinson
Science in the Capital (2)
Fifty Per Cent Prophet
Randall Garrett
50 in 50
Harry Harrison
50 in (50)
The X-Files: Fight the Future
Chris Carter & Elizabeth Hand
The X-Files (1)
A Fighting Man of Mars
Edgar Rice Burroughs
Barsoom (7)
Filaria
Brent Hayward
Final Assault
Stephen Ames Berry
John Harrison / Biofab War (1)
The Final Cut
Matthew Smith
Judge Dredd (Black Library) (6)
Final Impact
John Birmingham
Axis of Time (3)
Final Inquiries
Roger MacBride Allen
Bureau of Special Investigations (3)
The Final Key
Catherine Asaro
Saga of the Skolian Empire (3)
The Final Prophecy
J. Gregory Keyes
Star Wars: The New Jedi Order (18)
Final Reckoning: The Fate of Bester
The Psi Corps Trilogy (3)
Final Test
Dory Perlman
The Secret of the Unicorn Queen (3)
Finders Keepers
Linnea Sinclair
The Finding of Haldgren
Charles Willard Diffin
Walter Harkness (1)
Fire Dancer
Ann Maxwell
Dancer Trilogy (1)
Fire in the Mist
Holly Lisle
Arhel / Fire in the Mist (1)