Olver: Portrait of a Serial Killer

It’s difficult to tell how much Mark Olver would ordinarily diverge from his script as on this performance there were a series of hitches which he handled with admirable good humour. But should he tighten up this stand-up show/theatre experience it has the potential to be brilliant. Fulfilling his childhood dream of becoming a serial killer, Olver begins to bump off clowns. Soon he realises he’s not alone in his murderous endeavours.

The Caves, 556 5375, until 28 Aug (not 21 & 22), 3.35pm, £7 (£5).