Reap the Whirlwind by David Mack
REAP THE WHIRLWIND continues the story line of the previous VANGUARD novel, SUMMON THE THUNDER. In this third installment, the investigation of mysterious star system leads to a downed ship, a collision of military forces, and a difficult decision that will shatter lives and careers. REAP THE WHIRLWIND chronicles the race to solve an ancient mystery concerning a remote and unknown region of space, one that holds a highly coveted, mysterious, and potentially cataclysmic secret. At the centre of this intrigue is an eclectic mix of Starfleet and civilian protagonists unlike any crew previously seen in Star Trek, whose turbulent lives aboard are painted against the backdrop of an evolving storyline as the layers of the mystery are steadily peeled back, one after another.