- Country: Italy
- Genres: Documentary
- Release: 1987-09-10
- Director: Edmo Fenoglio
- Writers: Edmo Fenoglio , Giorgio Gualerzi
- Language: Italian
- Stars: Camilla Cederna , Giovanna Lomazzi , Giuseppe Pugliese , Nicola Rescigno
- Runtime: min
- Awards: N/A
- AKA: Segreto Callas , Segreto Callas (Italy)
- Plot: N/A
- IMDB:tt10298194