Doctor Miguel Azzini is found shot dead dead. The police suspect his colleagues: Elena Carli, his former mistress and owner of the clinic where he worked; Roberto Carli, her surgeon husband; Doctor Paula Lombardo, Roberto's mistress; and the clinic's administrator. Inspector Nardi discovers that Elena has a heart condition and had offered Miguel an increased sharehold in the clinic in order to dissuade him from leaving for another post. Elena's heart condition is worsened by the relentless police scrutiny and by her suspicion that Roberto is the murderer. She has to be rushed into hospital and is even more alarmed when Roberto prepares to operate...
Unfortunately the movie The Two Faces of Fear is not yet available on HBO Max.
| Art | Francisco Canet Cubel | Art Direction |
| Camera | José Cobos | Assistant Camera |
| Writing | Pedro Mario Herrero | Screenplay |
| Camera | Teodoro Roa | Camera Operator |
| Writing | Mario Di Nardo | Screenplay |
| Art | Gastone Carsetti | Art Direction |
| Writing | Pedro Mario Herrero | Story |
| Production | José Gutiérrez Maesso | Producer |
| Camera | Oddone Bernardini | Assistant Camera |
| Camera | Angelo Lannutti | Camera Operator |
| Directing | Tulio Demicheli | Director |
| Editing | Ángel Serrano | Editor |
| Sound | Franco Micalizzi | Original Music Composer |
| Production | Faustino Ocaña | Production Manager |
| Art | Rafael Borqué | Assistant Set Decoration |
| Production | Carlo Giovagnorio | Unit Manager |
| Camera | Aldo Marchiori | Assistant Camera |
| Art | Juan Gracia | Property Master |
| Directing | Olga Moller | Continuity |
| Costume & Make-Up | Franco Antonelli | Wardrobe Supervisor |
| Production | Antonio González | Production Assistant |
| Production | Ángel M. Ocaña | Production Assistant |
| Camera | José Salvador | Still Photographer |
| Costume & Make-Up | Osanna Guardini | Wardrobe Assistant |
| Crew | Martínez Bordiú | Technical Advisor |
| Camera | Manuel Rojas | Director of Photography |
