is a 1930 British mystery thriller film co-written and directed by Alfred Hitchcock and starring Herbert Marshall, Norah Baring and Edward Chapman.

Written by Hitchcock, his wife Alma Reville and Walter C. Mycroft, it is based on the 1928 novel Enter Sir John by Clemence Dane and Helen Simpson.

One or two feel that she may have a severe mental illness which means that she really does have no memory of killing the other woman, but they are convinced that she should still be hanged lest she strike again.

One juror, Sir John Menier, a celebrated actor-manager, seems sure she must be innocent, but is brow-beaten into voting "guilty" along with the rest of the jury.

Using skills he has learned in the theatre, John investigates the murder with the help of the stage manager Ted Markham and his wife Doucie.

John describes a plot closely resembling the murder, and Fane realises that they know he committed the crime and understand how and why he did it.

At the film's conclusion, Diana is shown free and glamorously dressed in a white fur, entering a beautiful room and being welcomed warmly by John, who receives her lovingly.

The portrayal of the character Sir John Mernier was loosely based on that of the actor Gerald du Maurier, who was a friend of Hitchcock.

[7] Despite this, various licensed, restored releases have appeared on DVD, Blu-ray and video on demand services from Optimum in the UK, Lionsgate and Kino Lorber in the US, and others.