On a sultry afternoon in the summer of 1936 a young woman is witness to an attempted murder in a London hotel room. Nina, a West End actress, faces a dilemma: she shouldn't have been at the hotel in the first place, and certainly not with a married man. But once it becomes apparent that she has seen the face of the man the newspapers have dubbed `the Tie-Pin Killer' she realises that unless she acts quickly, more women will die ...