Part Two of the Star Trek: Gibraltar series.

Dispatched to investigate the disappearance of a Starfleet vessel, the crew of Gibraltar find themselves embroiled in a mystery whose significance catches the attention of the upper echelons of Federation leadership. As forces beyond their comprehension converge on the enigmatic Pierosh star system, Captain Sandhurst and his crew must seek to unravel a tangled web of lies, plots, and divided loyalties that could ultimately spell doom for the entire quadrant.