AWOL

The team investigate when a father stages a protest in an attempt to persuade the army into opening a search for his missing son, who has disappeared since returning from a tour of Afghanistan. Initial suspicion falls on three of his army colleagues who he was drinking with on the night he disappeared, but when one of them is involved in a hit-and-run, the team discover that a secret affair was taking place within the confines of the regiment. With none of the suspects willing to grass on their comrades, the team lead a manhunt for a missing satellite navigation system, which could lead them to the location where they suspect the missing man's body has been buried.