First Strike
Invasion!, Book 1.
Long ago, before the days of myth and legend, our worlds belonged to them. Now they want them back...
Captain Kirk is stunned when the Federation receives an urgent plea for help – from the Klingon Empire. A mysterious starship has invaded Klingon space and resisted all their efforts to destroy it. Establishing contact with the stranger's ship, Kirk discovers that it is only the vanguard of a vast alien fleet obsessed with conquering the Klingons, the Federation, the Romulans, and all who dwell in the space that was once their own.
The Invasion has begun...
Diane Carey
Diane Carey (born 1954) is an author of historical fiction and science fiction who is perhaps best known for her work in the Star Trek franchise. She is the co-creator, with John J. Ordover, of the spin-off series, Star Trek: New Earth, and its continuation series, Star Trek: Challenger.
Among her other Star Trek novels are the original series books Star Trek: First Frontier, Starfleet Academy, the Starfleet Academy novel Cadet Kirk, the Star Trek: The Next Generation novel Ghost Ship, and the Star Trek: Deep Space Nine novelization of the two-part episode "The Way of the Warrior."
Star Trek: The Original Series (numbered novels)
Star Trek: The Original Series (numbered novels) consists of ninety-seven books. The current recommended reading order for the series is provided below.
Main series Star Trek: The Original Series