Trick or Treat is a British television show hosted by Derren Brown and broadcast on Channel 4. The first episode was broadcast on 13 April 2007. The focus of the show is on one person selected from a pool of volunteers who responded to adverts in the national press to take part in the show. The experience the volunteer receives is decided by which card they choose. If they choose the card that says 'Trick' they receive a bad experience and if they choose the card that says 'Treat' they receive a good experience. However, This distinction is not always obvious.