Experience the power of superstition as Derren executes one final twist on all of the previous participants - including David Tennant - at the end-of-series wrap party.

Derren attempts to transform IT worker Jason from a nervous doubter to a confident go-getter before he experiences a potentially embarrassing speed-dating event - twice - and faces a final surprise.

Derren ambushes agency worker Angela and gives her a series of tasks to fulfil, to prepare her to face probably the most challenging experience of her life...

Actor David Tennant is ambushed by Derren while filming on location and agrees to undergo a series of experiments that have him experiencing the feeling of time-travel. Disturbing and surreal content.

Derren demonstrates the power of negative suggestion, to see if 19-year-old Lauren can resist killing a kitten, which is in a box wired up to the mains electricity. Disturbing and surreal content.

Derren ambushes Glen, who agrees to compete in a Night of the Champions pub quiz. Can Derren convince Glen that he has a much better memory than he thought, and turn him into a genius in seven days?