Claudia Winkleman greets a group of celebrities as they arrive at a beautiful castle in the Scottish Highlands to play the ultimate reality game of detection, back-stabbing and trust.

It's not long before the famous faces are questioning everything and everyone as Claudia secretly assigns the Traitors. Their task is simple - under the cover of darkness, they must pick off their fellow players one by one, 'murdering' them from the game. The others - the Faithful - must try to work out who the Traitors are, banishing them from the game before becoming their next victim.

The players who survive murder and banishment face each other in the final, hoping to win up to £100,000 for their charity. If a Traitor remains, they take all the money and leave victorious.

With the first banishment sending shockwaves throughout the castle, the Traitors don't wait long to commit their next murder. As a new day dawns, the celebrity players turn their focus to a mission that forces them to work very closely as a team under punishing conditions. But as night falls, will their teamwork continue in the Round Table and result in catching a Traitor, or will they inadvertently banish a fellow Faithful?