Twenty-six-year-old Army veteran Kevin McGrath vanishes from a Carnival cruise after a celebration with his family. Despite a thorough canvass of the ship and a 3,300-mile Coast Guard search, no trace of him is found.

Just after dawn, twenty-nine-year-old Liz Barazza is gunned down by a figure in disguise as she is setting up a garage sale on her front lawn. Her doorbell camera records the attack. Several suspects quickly emerge. Who killed Liz Barraza?