Survivors (Star Trek: The Next Generation Book 4)

Treva is an isolated human colony on the fringes of known space on the verge of becoming a true interstellar community, a full fledged menber of the Federation. But now the U.S.S. EnterpriseTM has received a distress signal for Treva is in the throes of a violent revolution, a revolution led by a merciless warlord who has committed countless atrocities in the name of freedom.
Data and Lt. Tasha Yar are dispatched to investigate. Once they reach Treva, they discover the truth, and any possible solution may be far more complex than a simple rebellion. Treva's president wants more then Starfleet's good words in her fight against the rebels, she wants their weapons technology. And before the battle is over, she means to get them. Over Data's and Yar's dead bodies, if necessary.