Vincent Boylan (Joe Absolom) has just been arrested, suspected of being behind the brutal murder of seven girls, but the team only have a limited time to get a confession. If they can't make him talk, he could slip through their fingers. Detective Matheson (Gareth David-Lloyd), who is leading the investigation, is sent in by his boss Lyndon (Tracy-Ann Oberman) to try and get some answers. But Boylan has an ace up his sleeve - he has another girl, locked away, and she'll be dead in 30 minutes unless they find her.
Matheson and the team try to track down the girl as time runs out. They find a possible location, and Lyndon takes some officers to check it out. But the door is locked, and booby-trapped. What does Boylan want?
Boylan makes Matheson watch a webcam of the trapped girl on a laptop, while Lyndon tries to stop it happening. But there's nothing they can do...
Boylan shows Matheson that he's not messing around, and shows him Holly on the laptop. She's trapped somewhere else, and not so easy to find this time.
Matheson debates Boylan's offer while time runs out. If the door opens or anything happens to Boylan, the girl dies