Spock, Messiah!
The ultra-powered novel of a telepathic space terror!

Spock, Messiah! is a Bantam TOS novel, written by Theodore R. Cogswell and Charles A. Spano, Jr.. The second full-length original novel in Bantam's series, it was first published in .

Summary 
From the book jacket
The victim of a cruel experiment, Commander Spock renounces the , becomes the Messiah of the planet Kyros, and launches a holy war on the rest of the world[sic].

Background information
 Unlike most of Bantam's other original novels, Spock, Messiah! was not included in Titan Books' 1990s  reprint series.
 Notwithstanding the fan-written short story collection Star Trek: The New Voyages, this was the first original Star Trek novel to be published since 1970's Spock Must Die!. Following its release, however, original novels would be published on a more frequent basis, continuing until the early 1980s.

Characters

James T. Kirk
Spock
Leonard McCoy

References

Prime Directive
Kyros After deserting the Enterprise'', Spock becomes the Messiah of this planet.

External link 
 

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Novels