Attorney Anthony Keane agrees to represent Londonite Mrs. Paradine, who has been fingered in her husband's murder. From the start, the married lawyer is drawn to the enigmatic beauty, and he begins to cast about for a way to exonerate his client. Keane puts the Paradine household servant on the stand, suggesting he is the killer. But Keane soon loses his way in the courtroom, and his half-baked plan sets off a stunning chain of events.
Gregory Peck
as Anthony Keane
Ann Todd
as Gay Keane
Alida Valli
as Mrs. Paradine
Charles Laughton
as Judge Lord Thomas Horfield
Charles Coburn
as Sir Simon Flaquer
Ethel Barrymore
as Lady Sophie Horfield
Louis Jourdan
as Andre Latour
Leo G. Carroll
as Sir Joseph
Joan Tetzel
as Judy Flaquer
Isobel Elsom
as Innkeeper
Harry 'Snub' Pollard
as Cabby (uncredited)
Kenner G. Kemp
as Courtroom Spectator (uncredited)