This week Yshani, a young Sri-Lankan woman, selects a “Treat” card and is taught to play the piano to concert standard and performs a recital at Wigmore Hall after only two weeks of lessons with Derren. Derren also disguises himself as a waiter in New York, and attempts some psychic reading with his lunchtime customers. And actor Simon Callow is this week’s high-profile guest who falls under Derren’s influence.