Watch Derren Brown: Trick or Treat Season HD Full Free on solarmovie.do. Watch Derren Brown: Trick or Treat tv series online free. Volunteers choose between 2 cards: "Trick" or "Treat". Depending on which card is picked, Derren Bro...Volunteers choose between 2 cards: "Trick" or "Treat". Depending on which card is picked, Derren Brown provides the volunteer with either a good experience or a bad experience.