These days, The Vortex has lost none of its satirical savagery, but it's the play's psychological depths that intrigue Ejiofor. 'I admit the satire has a moral weight,' he nods. 'But I think its message is overshadowed by Coward's devastating investigation of psyche. It's about family intimacy and the relationship between people and their environments. He strips all that back. What he reveals, I think, is something many people will relate to. And, of course, it's about the distinction between casual drug use and addiction. That is an issue that never loses its relevance.'