A mental hospital somewhere in Tuscany during the thirties. Far away from fascism, this closed world is rules over by Dr. Bonaccorsi, a passionate benevolent psychiatrist whose dream is to isolate the germ of madness. He is also a very active ladies'man and makes three women benefit from his sexual itch: Francesca the hospital manager's wife, Bianca, his devoted nurse and Carla, a nymphomaniac doctor's wife. His well-ordered universe starts being challenged with the coming of Anna, a trainee psychiatrist, who disapproves of his theory on the origin of madness. Worse, she resists his advances. As Bonaccorsi is more insecure than he looks, what will become of him?
| Sound | Ennio Morricone | Original Music Composer |
| Writing | Mario Tobino | Novel |
| Production | Fulvio Lucisano | Producer |
| Writing | Tullio Pinelli | Screenplay |
| Directing | Mauro Bolognini | Director |
| Camera | Ennio Guarnieri | Director of Photography |
| Costume & Make-Up | Piero Tosi | Costume Design |