 | Donald Sutherland als Dr. Arthur Calgary |
 | Faye Dunaway als Rachel Argyle |
 | Christopher Plummer als Leo Argyle |
 | Sarah Miles als Mary Durant |
 | Ian McShane als Philip Durant |
 | Diana Quick als Gwenda Vaughan |
 | Annette Crosbie als Kirsten Lindstrom |
 | Michael Elphick als Inspector Huish |
 | George Innes als Archie Leach |
 | Valerie Whittington als Hester Argyle |
 | Phoebe Nicholls als Tina Argyle |
 | Michael Maloney als Micky Argyle |
 | Cassie Stuart als Maureen Clegg |
 | Anita Carey als Martha Jessup |
 | Ron Pember als Ferryman |
 | Brian Glover als Executioner |
| Billy McColl als Jack Argyle |
| Robert McBain als Hotel Manager |
| Agatha Christie | Novel |
| Desmond Davis | Director |
| Alexander Stuart | Screenplay |
| Yoram Globus | Executive Producer |
| Dave Brubeck | Original Music Composer |
| Billy Williams | Director of Photography |
| Sue Whatmough | Casting |
| Ken Bridgeman | Production Design |
| Timothy Gee | Editor |
| Richard Hornsby | Art Direction |
| Jenny Craven | Producer |
| Menahem Golan | Executive Producer |
| Michael J. Kagan | Associate Producer |
| Alan Birkinshaw | Director |
| Gwenda Evans | Costume Design |
| Robin Gregory | Sound Mixer |
| Wally Schneiderman | Makeup Supervisor |
| Sue Love | Hairdresser |
| David Tringham | First Assistant Director |
| Michael Stevenson | Second Assistant Director |
| Ken Shane | Third Assistant Director |
| Derek Ball | Sound Mixer |
| Peter Horrocks | Sound Editor |
| John Ireland | Sound Editor |
| Garth Inns | Special Effects Supervisor |
| Martin Grace | Stunt Coordinator |
| Chris Blunden | First Assistant Editor |
| Michael Linn | Music Editor |
| Glynn Purcell | Location Manager |
| Ernest Vincze | Title Designer |
