Gerry has a run-in with David Fleeting who he practically accuses of being a pervert before realizing the man is desperately looking for his wife. The only complication is that she is supposed to have died 18 months previously. Fleeting insists that he recently saw her in a crowd and is now convinced that the body of the car crash victim identified by his sister-in-law - he was away on business trip at the time of the accident - was that of someone else. Sandra isn't too keen but agrees on seeking an exhumation. A DNA test reveals the dead woman to be a Turkish immigrant who was reported missing around the same time Fleeting's wife was supposed to have died. As the investigators soon learn, the two cases are connected and not all is as it seems at first glance.

The team is asked by Dawn Abbott to reopen a fourteen year old case of a fire at the Union drinking club, which killed gangster Mark Johnson and three staff members. It was thought to be an accident but Mark told Dawn days before the fire that he thought somebody was out to kill him. Mark's brother Danny resents any suggestion that he was involved but fire investigator George Mackie tells the team that he thought at the time that the blaze was suspicious and the widow of the painter whose materials were supposedly to blame for the fire recalls that he was handsomely paid soon afterwards. Ultimately the culprit proves not to be a person with a grudge but a serial arsonist hoping to get away with as many fires as possible.