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 |
| Art | Tony Woollard | Draughtsman |
| Camera | Hugh Wilson | Camera Operator |
| Production | Jack Hicks | Production Manager |
| Writing | Jonathan Latimer | Screenplay |
| Sound | Lambert Williamson | Conductor |
| Writing | Philip Mackie | Theatre Play |
| Camera | Wilkie Cooper | Director of Photography |
| Costume & Make-Up | Bridget Sellers | Wardrobe Supervisor |
| Sound | Mischa Spoliansky | Original Music Composer |
| Sound | John Aldred | Sound Recordist |
| Sound | Bob Jones | Sound Recordist |
| Sound | John Dankworth | Musician |
| Directing | Yvonne Richards | Continuity |
| Art | Anthony Masters | Art Direction |
| Costume & Make-Up | Bill Griffiths | Hairdresser |
| Directing | Ronald Spencer | Assistant Director |
| Directing | Robert Porter | Third Assistant Director |
| Sound | Lambert Williamson | Music Director |
| Editing | Gerry Hambling | Editor |
| Costume & Make-Up | Roy Ashton | Makeup Artist |
| Sound | Teddy Darvas | Sound Editor |
| Production | Jack Clayton | Producer |
