La sorella di Ursula
- Taon: 1978
- Bansa: Italy
- Genre: Drama, Thriller, Horror
- Studio: Supercine
- Keyword: murder, serial killer, whodunit, luxury hotel, giallo
- Direktor: Enzo Milioni
- Cast: Barbara Magnolfi, Stefania D'Amario, Anna Zinnemann, Antiniska Nemour, Yvonne Harlow, Vanni Materassi