Prime suspect for a marine biology student's disappearance -later confirmed by a corpse- is her boyfriend Greg Knowles, who has a shaky alibi. His dominant identical twin brother Rick is cockily uncooperative, and Martin works out his itinerary with short stays in various cities fits a trail of unsolved murders. However Greg covers for him unconditionally, so the team digs deep into their past, with a single traumatic separation, and excessive sharing.
—KGF Vissers