Marcello, the scion of a noble and rich family, is morbidly obsessed with his mother, Countess Elisabetta di Tarcento. When she dies, things go haywire as people around him reveal their true identity and he gets a new motherly companion.
| Actor | Role |
|---|---|
 Senta BergerContessa Elisabetta di Tarcento | Contessa Elisabetta di Tarcento |
 Lino CapolicchioMarcello Giandomenico Filippo Maria, the son | Marcello Giandomenico Filippo Maria, the son |
 Sonia PetrovnaAlessandra Pizzullo | Alessandra Pizzullo |
 Vittorio CaprioliProfessor Goffredo | Professor Goffredo |
 Lionel StanderCount Eliogabalo di Tarcento / fake gardener Elia | Count Eliogabalo di Tarcento / fake gardener Elia |
 Isabelle MarchallRenée | Renée |
| EEnrico TricaricoNot listed | Not listed |
 Luigi Antonio GuerraNot listed | Not listed |
| SSilla BettiniBrigadiere Antonio Caputo | Brigadiere Antonio Caputo |
| VVanni CastellaniBartolo Manservigi, il notaio | Bartolo Manservigi, il notaio |