Una sull'altra
- Taon: 1969
- Bansa: France, Italy, Spain
- Genre: Mystery, Thriller
- Studio: Les Productions Jacques Roitfeld, Empire Films, Trébol Films C.C.
- Keyword: exploitation, giallo
- Direktor: Lucio Fulci
- Cast: Jean Sorel, Marisa Mell, Elsa Martinelli, Alberto de Mendoza, John Ireland, Riccardo Cucciolla