Kirsty Young's castaway is the critic, actress, and producer Blanche Marvin.
Blanche has been immersed in the theatre for seven decades. She worked with James Mason, Yul Brynner, Deborah Kerr and Peter Ustinov and calmed the nerves of Tennessee Williams. She brought Samuel Beckett to an American audience and persuaded Peter Brook to launch a series of awards to encourage artistic risk-takers.
A doyenne of the West End, she's at nearly every opening night and her reviews are read by producers on Broadway - looking for the next hit that could cross the Atlantic.
She says: "people say, how can you go to the theatre for 50 years and still be enthusiastic? Every time I go, I think, Oh, I'm going to see something, I'm going to be surprised!"
Producer: Isabel Sargent.