When Leonard Vole is arrested for the sensational murder of a rich, middle-aged widow, the famous Sir Wilfrid Robarts agrees to appear on his behalf. Sir Wilfrid, recovering from a near-fatal heart attack, is supposed to be on a diet of bland, civil suits—but the lure of the criminal courts is too much for him, especially when the case is so difficult.
You can now watch Witness for the Prosecution online on the following streaming providers in the United States.
| Writing | Lawrence B. Marcus | Adaptation |
| Writing | Harry Kurnitz | Screenplay |
| Directing | Billy Wilder | Director |
| Writing | Agatha Christie | Novel |
| Writing | Billy Wilder | Screenplay |
| Production | Arthur Hornblow Jr. | Producer |
| Editing | Daniel Mandell | Editor |
| Sound | Fred Lau | Sound |
| Directing | John Franco | Script Supervisor |
| Costume & Make-Up | Joe King | Costume Design |
| Costume & Make-Up | Gustaf Norin | Makeup Artist |
| Directing | Emmett Emerson | Assistant Director |
| Costume & Make-Up | Wally Westmore | Makeup Artist |
| Production | Edward Small | Executive Producer |
| Costume & Make-Up | Charles Gemora | Makeup Artist |
| Art | Howard Bristol | Set Decoration |
| Crew | Lee Zavitz | Special Effects |
| Production | Ben Hersh | Production Supervisor |
| Sound | Matty Malneck | Original Music Composer |
| Costume & Make-Up | Adele Parmenter | Costume Design |
| Camera | Madison S. Lacy | Still Photographer |
| Camera | Russell Harlan | Director of Photography |
| Costume & Make-Up | Edith Head | Costume Design |
| Art | Alexandre Trauner | Art Direction |
| Costume & Make-Up | Harry Ray | Makeup Artist |
| Sound | Leonid Raab | Music Arranger |
| Art | Stanley Detlie | Property Master |
| Sound | Ernest Gold | Conductor |
| Costume & Make-Up | Helene Parrish | Hairdresser |
| Costume & Make-Up | Nellie Manley | Hairdresser |
| Art | Alexandre Trauner | Production Design |
| Writing | Agatha Christie | Story |
| Costume & Make-Up | Ray Sebastian | Makeup Artist |
| Directing | Frank Losee | Second Assistant Director |
| Production | William Maybery | Casting |
| Production | Doane Harrison | Production Assistant |
| Crew | Edward Small | Presenter |
| Crew | Basil Bleck | Technical Advisor |
| Writing | Noël Coward | Dialogue |
| Writing | Bert Steiner | Dialogue |
