Derren executes a final twist on the previous participants at the end-of-series wrap party.

Derren attempts to transform IT worker Jason from a doubter to a confident go-getter.

Derren prepares Angela to face probably the most challenging experience of her life...

Derren ambushes actor David Tennant while he's filming on location.

Derren demonstrates the power of negative suggestion by taking Lauren on an emotional ride.

Derren ambushes Glen, who agrees to compete in a Night of the Champions pub quiz.