Directed by
| Paul Bogart | ||
| Philip F. Falcone | ||
| Leo Farrenkopf | ||
| Dan Zampino | ||
Writing Credits (in alphabetical order)
| Agatha Christie | ... | (novel) |
| Philip H. Reisman Jr. | ||
Cast (in credits order)
| Nina Foch | ... | Vera Claythorne | |
| Barry Jones | ... | Mr. Justice Sir Lawrence Wargrave | |
| Romney Brent | ... | Dr. Edward Armstrong | |
 |
Peter Bathurst | ... | General John Gordon Mackenzie |
| Kenneth Haigh | ... | Philip Lombard | |
| Rest of cast listed alphabetically: | |||
|
|
James Berwick | ... | Det. William Henry Blore (as James Kenny) |
|
|
Caroline Brenner | ... | Ethel Rogers |
|
|
Chandler Cowles | ... | Frederick James Marston |
| Valerie French | ... | Emily Brent | |
|
|
Jeremiah Morris | ... | Boatman |
|
|
George Turner | ... | Thomas Rogers |
Produced by
| Alex March | ... | producer |
| David Susskind | ... | executive producer |
| Renée Valente | ... | associate producer |
Casting By
| Rose Tobias Shaw | ... | (as Rose Tobias) |
Art Direction by
| Duane McKinney | ||
Costume Design by
| John Boxer | ||
Makeup Department
| Bob O'Bradovich | ... | makeup artist |
Production Management
| Ronald H. Gilbert | ... | executive in charge of production |
Second Unit Director or Assistant Director
| Hugh McPhillips | ... | assistant director |
| Claire Sheridan | ... | assistant director |
Music Department
| John Geller | ... | music supervisor |
