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Kirk and Spock face their greatest crisis in a bold new adventure!

Black Fire is a Pocket TOS novel – #8 in the numbered series – written by Sonni Cooper. Published by Pocket Books, it was first released in January 1983. Spock is declared a traitor and James T. Kirk must choose to side with his friend or his duty as a Starfleet officer.


From the book jacket
When sabotage strikes the Enterprise, Spock's investigation leads him into an alliance with the Romulan and Klingon empires against the Tomarii, a bloodthirsty race for whom war is life itself. Spock is declared a traitor and sentenced to the Federation's highest-security prison, and Kirk must choose between friendship and duty, with dire consequences for himself, Spock, and the entire Federation if he's wrong.

Excerpts of copyrighted sources are included for review purposes only, without any intention of infringement.

Background information

  • This is the only Star Trek novel written by Sonni Cooper.
  • It features an introduction by Theodore Sturgeon.
  • The Romulan commander played by actress Joanne Linville in TOS: "The Enterprise Incident" makes a cameo appearance. Spock asks if he may call her by name. She prefers that he forget she exists.
  • Based on Chekov having just been promoted to lieutenant according to dialogue in the book, this story must take place some time between the original series and the first movie.
  • A limited edition hardcover version was printed by Gregg Press in 1984.

Cover gallery


Canon characters

Captain James T. Kirk
Commander Spock
Chief Surgeon Leonard McCoy
Lieutenant Commander Montgomery Scott
Hikaru Sulu
Lieutenant Pavel Chekov

Romulan commander

Romulan commander

Non-canon characters

Lieutenant Commander Martin 
Science officer
Lieutenant Commander Douglas


Romulan Neutral Zone; Romulan Star Empire; Romulus

External links

Previous novel: Series Next novel:
#7: Star Trek: The Wrath of Khan Pocket TOS
Numbered novels
#9: Triangle
Doctor's Orders (#36) Titan Books release order  Killing Time (#38)