When Professor Willingdon becomes wary of the nuclear weapons he is helping build, he steals a warhead and threatens to detonate it in London in seven days unless the government begins nuclear disarmament. As Willingdon goes into hiding, Detective Folland of Scotland Yard sets out to find him. Willingdon's daughter Ann also joins the cause, hoping she can talk sense into her father before he causes a catastrophe.

Genres

Cast

Barry Jones

Professor John Malcolm Francis Willingdon

André Morell

Superintendent G.W. Folland

Sheila Manahan

Ann Willingdon

Hugh Cross

Stephen Lane

Joan Hickson

Mrs. Emily Georgina Peckett

Ronald Adam

Arthur Lytton, the Prime Minister

Marie Ney

Mrs. Willingdon

Joss Ackland

Station Policeman

Marianne Stone

Woman in Phone Box

John Stratton

Army Mechanic