A woman whose husband was murdered five years previously, is stalked by his killer, who wants to eliminate her as a potential witness. What he doesn't know is that the shock of his murder caused her to have amnesia, and she doesn't remember anything.
Unfortunately the movie The Killer Is on the Phone is not yet available on HBO Max.
| Directing | Alberto De Martino | Director |
| Writing | Adriano Bolzoni | Writer |
| Writing | Alberto De Martino | Writer |
| Writing | Renato Izzo | Writer |
| Writing | Lorenzo Manning | Writer |
| Writing | Vincenzo Mannino | Writer |
| Production | Guy Luongo | Executive Producer |
| Production | Aldo Scavarda | Producer |
| Sound | Stelvio Cipriani | Original Music Composer |
| Editing | Otello Colangeli | Editor |
| Art | Antonio Visone | Production Design |
| Art | Serge-Henri Valcke | Set Decoration |
| Costume & Make-Up | Enrico Sabbatini | Costume Design |
| Sound | Giovanni Fratarcangeli | Sound |
| Sound | Fausto Ancillai | Sound Mixer |
| Costume & Make-Up | Carla Indoni | Hairstylist |
| Costume & Make-Up | Amato Garbini | Makeup Artist |
| Costume & Make-Up | Alberto Travaglini | Makeup Artist |
| Camera | Joe D'Amato | Director of Photography |
