Anthony Nelson Keys (13 November 1911 – 19 March 1985) was a British film producer, best known of his work with Hammer Film Productions. His father was Nelson Keys and his brother John Paddy Carstairs.
A group of strangers become trapped in a stalled elevator, and as tensions rise, they realize one of them may be the devil in disguise. As each person’s past sins come to light, the survivors must uncover the truth before they are all claimed.
