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.
| Directing | Mario Bava | Director |
| Camera | Mario Bava | Director of Photography |
| Sound | Roberto Nicolosi | Original Music Composer |
| Writing | Sergio Corbucci | Screenplay |
| Writing | Ennio De Concini | Story |
| Writing | Ennio De Concini | Screenplay |
| Writing | Sergio Corbucci | Story |
| Writing | Eliana De Sabata | Story |
| Writing | Eliana De Sabata | Screenplay |
| Art | Giorgio Giovannini | Art Direction |
| Directing | Neda Matteucci | Script Supervisor |
| Writing | Franco Prosperi | Screenplay |
| Costume & Make-Up | Tina Grani | Costume Design |
| Directing | Franco Prosperi | Assistant Director |
| Lighting | Antonio Rinaldi | Gaffer |
| Costume & Make-Up | Euclide Santoli | Makeup Artist |
| Production | Massimo De Rita | Executive Producer |
| Writing | Mino Guerrini | Screenplay |
| Art | Emilio Schuberth | Set Dresser |
| Writing | Mario Bava | Screenplay |
| Production | Salvatore Billitteri | Associate Producer |
| Editing | Mario Serandrei | Editor |
| Costume & Make-Up | Mara Rocchetti | Hair Designer |
| Production | Paolo Mercuri | Production Manager |
| Camera | Ubaldo Terzano | Camera Operator |
| Production | Armando Govoni | Production Assistant |
| Directing | Enrico Checchi | Second Assistant Director |
| Art | Luigi D'Andria | Set Decoration |
| Editing | Lina Caterini | Assistant Editor |
