On the Italian coast, writer Paul Decker has grown unhappy in his marriage and executes what appears to be a perfect murder of his wife. While Paul is believed to be writing a book in France, his stepdaughter, Candy, suspects him of murdering her mother, as well as her father years before. With the police unwilling to investigate any further, Candy sets out to confirm her suspicions and take Paul down herself.
Unfortunately the movie The Snorkel is not yet available on HBO Max.
| Directing | Guy Green | Director |
| Writing | Anthony Dawson | Story |
| Writing | Peter Myers | Screenplay |
| Writing | Jimmy Sangster | Screenplay |
| Production | Michael Carreras | Producer |
| Sound | Francis Chagrin | Original Music Composer |
| Camera | Jack Asher | Director of Photography |
| Editing | James Needs | Editor |
| Editing | Bill Lenny | Editor |
| Art | John Stoll | Art Direction |
| Costume & Make-Up | Philip Leakey | Makeup Artist |
| Sound | Ken Cameron | Sound Re-Recording Mixer |
| Sound | Jock May | Sound Recordist |
| Sound | Carlisle Mounteney | Sound |
| Costume & Make-Up | Molly Arbuthnot | Costumer |
| Costume & Make-Up | Henry Montsash | Hairdresser |
| Production | Don Weeks | Production Manager |
| Directing | Tom Walls Jr. | Assistant Director |
| Directing | Doreen Dearnaley | Continuity |
| Sound | John Hollingsworth | Conductor |
| Production | Renzo Lucidi | Location Manager |
| Camera | Len Harris | Camera Operator |
| Production | Anthony Nelson Keys | Associate Producer |
