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Witness for the Prosecution
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.
Plot
Senior barrister Sir Wilfrid Robarts is nearing retirement after a heart attack. He agrees to defend Leonard Vole, despite Nurse Plimsoll's objections and Sir Wilfrid's doctor having warned against taking stressful criminal cases. Leonard is accused of murdering Emily French, a wealthy, childless widow who fell in love with him and named him as the main beneficiary in her will.