The Cast
| Eileen Brennan | - | Tess Skeffington |
| Truman Capote | - | Lionel Twain |
| James Coco | - | Inspector Milo Perrier |
| Peter Falk | - | Sam Diamond |
| Alec Guinness | - | Jamesir Bensonmum |
| Elsa Lanchester | - | Miss Jessica Marbles |
| David Niven | - | Dick Charleston |
| Peter Sellers | - | Inspector Sidney Wang |
| Maggie Smith | - | Mrs. Dora Charleston |
| Nancy Walker | - | Yetta |
| Estelle Winwood | - | Miss Withers |
| James Cromwell | - | Marcel |
| Richard Narita | - | Willie Wang |