The adapted screenplay was written by de Grunwald and Rattigan based on Rattigan 's play .
It was directed by Anthony Asquith and produced by Anatole de Grunwald with Teddy Baird as associate producer .
The adapted screenplay was written by Anatole de Grunwald   and Rattigan based on Rattigan 's play .
It was directed by Anthony Asquith and produced by Anatole de Grunwald with Teddy Baird as associate producer .