FROM ARSENIC AND OLD LACE to The Man who Came to Dinner, the haplessness of polite people confronting wickedness in a domestic setting is a staple of farce. In the hands of Steven Moff at, co-creator with Mark Gatiss of the BBC’s Sherlock, the tradition has a new addition in The Unfriend, which is a welcome arrival from Chichester festival at London’s Criterion.
It’s a while since the subterranean theatre at Piccadilly has had a success after hosting the long-running hits, A location which is
