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.
| Writing | Peter Myers | Screenplay |
| Camera | Jack Asher | Director of Photography |
| Art | John Stoll | Art Direction |
| Editing | James Needs | Editor |
| Sound | Francis Chagrin | Original Music Composer |
| Directing | Guy Green | Director |
| Production | Michael Carreras | Producer |
| Editing | Bill Lenny | Editor |
| Writing | Jimmy Sangster | Screenplay |
| Writing | Anthony Dawson | Story |
| Sound | Ken Cameron | Sound Re-Recording Mixer |
| Costume & Make-Up | Philip Leakey | Makeup Artist |
| Costume & Make-Up | Molly Arbuthnot | Costumer |
| Sound | Jock May | Sound Recordist |
| Sound | Carlisle Mounteney | Sound |
| Sound | John Hollingsworth | Conductor |
| Camera | Len Harris | Camera Operator |
| Production | Renzo Lucidi | Location Manager |
| Production | Anthony Nelson Keys | Associate Producer |
| Costume & Make-Up | Henry Montsash | Hairdresser |
| Directing | Tom Walls Jr. | Assistant Director |
| Production | Don Weeks | Production Manager |
| Directing | Doreen Dearnaley | Continuity |
