Hangmen, Wyndham's Theatre
Just what constitutes reasonable behaviour in an enlightened society? Not long ago, the death penalty fell under that umbrella in Britain, and state-sanctioned killing as punishment for the crime of, well, killing is just the kind of twisted irony that cries out for the McDonagh treatment. Here it is, ending the playwright's 10-year absence from the London stage, and his Royal Court hit fully earns its West End trans…