The Summit 1-5

With day 11 comes a twist that will force a heartbreaking decision. As animosity builds against Sam the Chaser, knowing what to do with this outsider is going to be one of a challenge.

Seven hikers become six, as a double-obstacle with a raging waterfall at its centre splinters the group - but even bigger forces are at play, with a killer twist turning the game on its head.

In the quest to reach the summit in 15 days, the 13 remaining hikers are already struggling. A medical emergency shocks everyone, a terrifying rope crossing blocks their path.