When socialite and heiress Julie Wardh begins receiving blackmail letters attributed to a mysterious serial killer, she suspects her cruel and sadistic former lover Jean is behind them. With her husband Neil frequently out of town, she falls into the arms of her friend's cousin George, and as the unknown assassin begins to make his move, she fears that one of the three men in her life may be the killer.
Unfortunately the movie The Strange Vice of Mrs Wardh is not yet available on HBO Max.
| Writing | Vittorio Caronia | Screenplay |
| Directing | Sergio Martino | Director |
| Editing | Eugenio Alabiso | Editor |
| Sound | Nora Orlandi | Original Music Composer |
| Writing | Ernesto Gastaldi | Screenplay |
| Writing | Eduardo Manzanos | Screenplay |
| Production | Luciano Martino | Producer |
| Production | Antonio Crescenzi | Producer |
| Production | Franco Fogagnolo | Unit Manager |
| Sound | Pietro Ortolani | Sound Recordist |
| Art | Jaime Pérez Cubero | Set Designer |
| Art | José Luis Galicia | Set Designer |
| Camera | Florian Trenker | Director of Photography |
| Camera | Emilio Foriscot | Director of Photography |
| Writing | Eduardo Manzanos | Original Story |
| Camera | Michele Picciaredda | Assistant Camera |
| Costume & Make-Up | Mario Di Salvio | Makeup Artist |
| Camera | Giancarlo Ferrando | Camera Operator |
| Production | Franco Fogagnolo | Production Supervisor |
| Costume & Make-Up | Riccardo Domenici | Costume Design |
| Editing | Amedeo Moriani | Assistant Editor |
| Production | Florian Trenker | Production Manager |
| Directing | Vittorio Caronia | Assistant Director |
| Directing | Mirella Malatesta | Script Supervisor |
| Sound | Paolo Ormi | Music Director |
| Directing | Francisco Rodríguez | Assistant Director |
| Camera | Francesco Narducci | Still Photographer |
| Production | Lamberto Palmieri | Unit Manager |
