An ailing famous barrister agrees to defend a man in a sensational murder trial where his self-possessed wife's unconvincing testimony confuses him.
Witness for the Prosecution is a 1957 American legal mystery thriller film directed by Billy Wilder and starring Tyrone Power, Marlene Dietrich, and Charles Laughton, with Elsa Lanchester and John Williams. The film, which has elements of bleak black comedy and film noir, is a courtroom drama set in the Old Bailey in London and is based on the 1953 play of the same title by Agatha Christie. The first film adaptation of Christie's story, Witness for the Prosecution was written for the screen by Wilder and Harry Kurnitz and adapted by Larry Marcus.
