Are you sitting comfortably? Then I'll begin. Martin McDonagh recently bagged film awards for The Banshees of Inisherin, but this play, which reaches the West End two decades after it was first performed, has a distinctly darker tone. Lily Allen plays Katurian, a writer in an unnamed Kafkaesque police state who is being interrogated about her work. Numerous killings seem to echo the plots. Could she be responsible, either directly or indirectly?