Survivor | Episode 4 Preview (BBC One)

Hosted by Joel Dommett, the ultimate physical and psychological game promises viewers a compelling test of brains, brawn and betrayal as players compete to outwit, outplay and outlast their rivals to win £100,000 and be crowned the Sole Survivor.

Divided into two rival tribes, they must live on remote beaches, face the elements and battle against each other in epic challenges for reward or immunity.

With just 15 people left, the competition is heating up, and one castaway makes a game-changing discovery.

At the reward challenge, it’s revealed who was voted out at Tribal Council, and the tribes go head-to-head in a brutal battle in the water. But only one tribe can win the much-needed food reward.

At the immunity challenge, balance and dexterity are rewarded with safety, but who will clinch victory? And when the losing tribe goes to Tribal Council, a huge twist awaits one castaway.

Survivor continues tonight at 8pm on BBC One.