The celebrities have been living in the dark for 30 hours, and tensions are already reaching boiling point. Chris Eubank still isn't happy about the swearing in the group, prompting Chris McCausland to defend the younger members. They are shackled into pairs for 12 hours, with one pair forced to spend an extra 12 hours trapped in a two metre square box.

The bunker is taking its toll on the celebrities as the competition nears its end. They face an electrifying challenge involving pitch-black orienteering and painful shocks. Max makes some emotional revelations.