On the French Riviera, movie producer Max Poulton is on location shooting a film starring his lover, Gina Bertini. But when the rueful Max ends his fling with Gina to return to his loyal wife, Carol, the jilted actress threatens to reveal details of their affair to Carol. Later, at a party at Max's villa, investigator Carliss arrives with news that Gina has been killed and that Max is a murderer suspect.
Unfortunately the movie The Whole Truth is not yet available on HBO Max.
| Directing | John Guillermin | Director |
| Sound | Fred Ryan | Sound Recordist |
| Writing | Jonathan Latimer | Screenplay |
| Writing | Philip Mackie | Theatre Play |
| Production | Jack Clayton | Producer |
| Sound | Mischa Spoliansky | Original Music Composer |
| Camera | Wilkie Cooper | Director of Photography |
| Editing | Gerry Hambling | Editor |
| Art | Anthony Masters | Art Direction |
| Costume & Make-Up | Roy Ashton | Makeup Artist |
| Costume & Make-Up | Bill Griffiths | Hairdresser |
| Production | Jack Hicks | Production Manager |
| Directing | Ronald Spencer | Assistant Director |
| Directing | Robert Porter | Third Assistant Director |
| Art | Tony Woollard | Draughtsman |
| Sound | John Aldred | Sound Recordist |
| Sound | Teddy Darvas | Sound Editor |
| Sound | Bob Jones | Sound Recordist |
| Camera | Hugh Wilson | Camera Operator |
| Costume & Make-Up | Bridget Sellers | Wardrobe Supervisor |
| Sound | Lambert Williamson | Conductor |
| Sound | Lambert Williamson | Music Director |
| Sound | John Dankworth | Musician |
| Directing | Yvonne Richards | Continuity |
