A tourist witnesses a murder and finds herself caught up in a series of bloody killings.
Is The Girl Who Knew Too Much on Netflix? Unfortunately the movie The Girl Who Knew Too Much is not yet available on Netflix. Follow us on Facebook to see when The Girl Who Knew Too Much becomes available on Netflix!
| Camera | Mario Bava | Director of Photography |
| Sound | Roberto Nicolosi | Original Music Composer |
| Directing | Mario Bava | Director |
| Writing | Eliana De Sabata | Screenplay |
| Directing | Franco Prosperi | Assistant Director |
| Lighting | Antonio Rinaldi | Gaffer |
| Writing | Sergio Corbucci | Screenplay |
| Production | Massimo De Rita | Executive Producer |
| Writing | Mario Bava | Screenplay |
| Directing | Enrico Checchi | Second Assistant Director |
| Editing | Mario Serandrei | Editor |
| Camera | Ubaldo Terzano | Camera Operator |
| Production | Armando Govoni | Production Assistant |
| Writing | Ennio De Concini | Story |
| Writing | Eliana De Sabata | Story |
| Art | Giorgio Giovannini | Art Direction |
| Costume & Make-Up | Mara Rocchetti | Hair Designer |
| Editing | Lina Caterini | Assistant Editor |
| Art | Emilio Schuberth | Set Dresser |
| Writing | Ennio De Concini | Screenplay |
| Costume & Make-Up | Euclide Santoli | Makeup Artist |
| Directing | Neda Matteucci | Script Supervisor |
| Writing | Mino Guerrini | Screenplay |
| Writing | Sergio Corbucci | Story |
| Art | Luigi D'Andria | Set Decoration |
| Production | Salvatore Billitteri | Associate Producer |
| Writing | Franco Prosperi | Screenplay |
| Costume & Make-Up | Tina Grani | Costume Design |
| Production | Paolo Mercuri | Production Manager |
