This past Friday David Tennant appeared on Derren Brown’s show Trick or Treat. For those that don’t know, Derren Brown is a magician, hypnotist, psychological illusionist. On his show volunteers are presented with two cards. a “Trick” card or a “Treat” card. The volunteer picks one card and the experience reflects which card they picked. David Tennant, of course famous for playing everyone’s favorite time traveler, got to experience what it was like to actually witness something in the past and to be able to “see” the future. Check out the video after the jump.

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