Nora is een jonge toeriste die tijdens een gezellige wandeling getuige is van een gruwelijke moord. Later blijkt dat de moord de daad was van een gezochte seriemoordenaar en de politie vraagt Nora's hulp bij het oplossen van een reeks moorden die inmiddels bekend staan als de 'Alphabet Killings'.
Nee, helaas is La ragazza che sapeva troppo nog niet beschikbaar op Netflix in Nederland.
| 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 |
