Uhura's Song
by Janet Kagan | 
Doctor's Orders
by Diane Duane | 
The Vulcan Academy Murders
by Jean Lorrah | 
The Kobayashi Maru
by Julia Ecklar | 
The IDIC Epidemic
by Jean Lorrah | 
The Lost Years
by J. M. Dillard | 
Final Frontier
by Diane Carey | 
The Entropy Effect
by Vonda N. McIntyre | 
Time for Yesterday
by A. C. Crispin | 
Prime Directive
by Garfield Reeves-Stevens | 
Yesterday's Son
by A. C. Crispin | 
Black Fire
by Sonni Cooper | 
Strangers From The Sky
by Margaret Wander Bonanno |
Memory Prime
by Garfield Reeves-Stevens | 
Battlestations!
by Diane Carey | 
Killing Time
by Della Van Hise | 
Crossroad
by Barbara Hambly | 
Sanctuary
by John Vornholt |
Enemy Unseen
by V. E. Mitchell | 
Ghost Walker
by Barbara Hambly |
The Enterprise is on a peaceful mission at Starbase 12, and Spock is visiting aboard a Klingon vessel, when a mysterious phenomenon causes the Klingon ship to vanish. Spock's last message from the ship is cryptic, but frightening. It suggests that the Klingons are traveling into the past, hoping to kill one man who was decisive in the course of history, and thereby change it, destroying the Federation before it was born.
