The leavers' party on the boat is in full swing when Peri lets out a spine-chilling scream. Ste's blood runs cold when he can't find his drugs. Tony has second thoughts about going to France when he finds out his job is for a junior chef.

In this special episode, Harry and Tony lock Ste in the house to fight his drug withdrawal. But when the pain and sickness get steadily worse, is Ste strong enough to resist temptation one last time?