Seven Days to Noon

Seven Days to Noon is a 1950 British drama thriller film directed by John Boulting and Roy Boulting. Based on the book, Un Nazi en Manhattan, written by Fernando Josseau. Paul Dehn and James Bernard won the Academy Award for Best Story for this film and they never give the credits to Josseau for the story.

Arriving at the Wallingford Research Centre based on the Atomic Weapons Research Establishment AWRE at Aldermaston, Follands team find Willingdon missing, along with a nuclear bomb. Willingdons assistant Lane Hugh Cross is recruited to help and they return to London to search for him.Willingdon, carrying his bomb in a Gladstone bag, finds lodgings with Mrs Peckitt Joan Hickson, but spooks her with his constant pacing around his room during the night. The following morning, he leaves early and, seeing a wanted poster with his face, disguises himself with a new coat and having his moustache shaved off. ........

Source: Wikipedia