Star Trek: The Original Series - Errand of Vengeance

Star Trek: The Original Series – Errand of Vengeance is a trilogy of Pocket TOS novels written by Kevin Ryan and published by Pocket Books in . It follows the events of the five-year mission of the Original Series, told from the point of view of a Klingon infiltrator whose mission is to kill Captain Kirk.
The story continues in the Errand of Fury trilogy.
== Novels ==
# The Edge of the Sword
# Killing Blow
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== External link ==
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Errand of Vengeance