Il gatto a nove code
- annos singulos: 1971
- Patriam: Germany, France, Italy
- genus: Mystery, Thriller, Horror
- Studio: Labrador Films, Seda Spettacoli, Terra-Filmkunst, Titanus
- keyword: psychopath, adoption, stalker, murder, laboratory, homicidal, serial killer, slasher, whodunit, maniac, psychiatrist, policeman, mental illness, psycho killer, child kidnapping, multiple murder, voyeurism, madman, blind man, giallo
- Director: Dario Argento
- cast: James Franciscus, Karl Malden, Catherine Spaak, Pier Paolo Capponi, Horst Frank, Rada Rassimov