In een trein die op volle snelheid rijdt, stapt een man in een slaapwagon en vermoordt een stel op huwelijksreis. Later presenteert de moordenaar zich als een paranoïde, auteur van vijf moorden op vrouwen. Het is een jonge en rijke dertigjarige ontwerper, Richard Harrington. Mildred, zijn vrouw, gefascineerd door spiritualisme, weigert koppig te scheiden, ook al geeft hij de voorkeur aan mooie poppen in trouwjurken. Een onbreekbare band lijkt hen te verenigen.
Nee, helaas is Il rosso segno della follia nog niet beschikbaar op Netflix in Nederland.
| Camera | Mario Bava | Director of Photography |
| Writing | Mario Bava | Screenplay |
| Production | Manuel Caño | Producer |
| Directing | Mario Bava | Director |
| Editing | Soledad López | Editor |
| Costume & Make-Up | José María Tresserra | Costume Design |
| Art | Giulia Mafai | Production Design |
| Writing | Santiago Moncada | Screenplay |
| Sound | Sante Maria Romitelli | Original Music Composer |
| Camera | Jaime Deu Casas | Camera Operator |
| Writing | Laura Betti | Screenplay |
| Writing | Mario Musy Glori | Screenplay |
| Production | Enzo Ferla | Production Assistant |
| Production | Giuseppe Zaccariello | Producer |
| Camera | Antonio Rinaldi | Director of Photography |
| Costume & Make-Up | Hipólita López | Hairstylist |
| Costume & Make-Up | Pierantonio Mecacci | Makeup Artist |
| Costume & Make-Up | Elisa Aspachs | Makeup Artist |
| Costume & Make-Up | Emilia Zachini | Hairstylist |
| Production | Graziano Fabiani | Assistant Production Manager |
| Production | Enzo Ferla | Unit Production Manager |
| Production | Jaime Fernandez | Production Manager |
| Production | José Pedro Villanueva | Assistant Production Manager |
| Directing | Lamberto Bava | Assistant Director |
| Directing | Ricardo Walker | Assistant Director |
| Directing | Lamberto Bava | Second Unit Director |
| Art | Jesús M. Herrero González | Set Designer |
| Art | Giuseppe Aldrovandi | Assistant Art Director |
| Art | Gianna Spirito | Assistant Decorator |
| Sound | Pietro Ortolani | Sound |
| Camera | Jose Adrian | Still Photographer |
| Camera | Marcello Anconetani | Assistant Camera |
| Camera | Gianlorenzo Battaglia | Assistant Camera |
| Camera | Avelino Carla | Assistant Camera |
| Camera | Giuseppe Parrabano | Still Photographer |
| Camera | Emilio Varriano | Camera Operator |
| Camera | Mario Bava | Camera Operator |
| Camera | Antonio Rinaldi | Camera Operator |
| Costume & Make-Up | Nadia Fabriani | Set Costumer |
| Editing | Liliana Serra | Assistant Editor |
| Sound | Luigi Zito | Conductor |
| Directing | Patrizia Zulini | Script Supervisor |
| Directing | Marisa Agostini | Script Supervisor |
| Crew | N.W. Russo | Presenter |
| Production | Antonio Angrisano | Production Secretary |
| Art | Mario Bava | Title Designer |
| Art | Luigi Biamonte | Title Designer |
| Art | Miro Grisanti | Title Designer |
