Star Trek: The Next Generation: Stargazer: Enigma

Without warning, a Starfleet ship is overwhelmed by a mysterious, alien aggressor—one who appears to possess an intimate knowledge of the vessel's tactical technology. Then a second Starfleet ship is attacked. And a third. Twenty-eight-year-old Jean-Luc Picard, captain of the U.S.S. Stargazer —a Constellation -class starship—is ordered to help form a desperate line of defense against the aggressor. But it seems nothing can stop the aliens' headlong plunge into the heart of the Federation. Or rat