Marc Salem's Mind Games Extra - TNT

There's no point trying to lie to this tubby, balding New York psychologist in a suit- he'll catch you out just about every time. I've seen him on a handful of occasions, and although he explains that all he's doing is reading non-verbal signals, I'm still completely baffled by how he manages to fathom the digits on an Oyster card randomly selected from a member of the audience — not easy when you've got 50p pieces taped over your lids which are then covered with an opaque blindfold. He's pretty nifty with figures, stops and starts his pulse at will, sprinkles his avuncular patter with corny jokes, can figure out where you've been on holiday and even what you ate — and is guaranteed to leave your mind well and truly boggled.
Tricycle, Kilburn High Rd, NW6, 020-7328 1000. Until July 29

Louise Kingsley