Star Trek - Assignment, Eternity
Captain Kirk first encountered Gary Seven on twentieth-century Earth. Now Seven, a time-traveling operative for unknown alien forces, makes a surprise visit to the USS Enterprise. Kirk is on an urgent mission to bring relief to a disaster-ravaged planet, but Seven has an agenda of his own -- and he's not above hijacking the Starship Enterprise and sending it on a perilous journey deep into the heart of the Romulan Empire.

Kirk must dare to trust Gary Seven once again, as he confronts the possibility that the enigmatic stranger may bring death and destruction to Kirk's own era.
James T. Kirk (Fictitious character), Leonard McCoy (Fictitious character), Spock (Fictitious character), Fiction, collectionID:ST#
Greg Cox
Greg Cox (born 1959) is an American writer of science fiction, including works that are media tie-ins. He lives in Oxford, Pennsylvania.

He has written numerous Star Trek novels, including The Eugenics Wars (Volume One and Two), The Q Continuum, Assignment: Eternity, and The Black Shore. His short fiction can be found in such anthologies as Star Trek: Tales of the Dominion War, Star Trek: The Amazing Stories and Star Trek: Enterprise logs. His first "Khan" novel, The Eugenics Wars: Volume One, was voted best sci-fi book of the year by the readers of Dreamwatch magazine. Cox can be found in a bonus feature on the "Director's Edition" DVD of Star Trek II: The Wrath of Khan.