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.

Celebrities joining Claudia in the castle are:

Alan Carr (Comedian & television presenter), Cat Burns (Singer-songwriter), Celia Imrie (Stage & screen actress), Charlotte Church (Singer & television presenter), Clare Balding (Television presenter & journalist), David Olusoga (Historian & film-maker), Joe Marler (Former England rugby player), Joe Wilkinson (Comedian & actor), Jonathan Ross (Television presenter), Kate Garraway (Television presenter & journalist), Lucy Beaumont (Comedian), Mark Bonnar (Stage & screen actor), Nick Mohammed (Actor & comedian), Niko Omilana (Social media personality), Paloma Faith (Singer-songwriter & actress), Ruth Codd (Actress), Stephen Fry (Actor, writer & presenter), Tameka Empson (EastEnders actress) and Tom Daley (Former Olympic diver)