Anselmo is a young anthropologist who is tormented by jealousy, and although his wife Camilla does not give reasons, keeps a close eye on her. After consulting a psychiatrist, the doctor says the problem is him and not his wife. So he plots to verify, once and for all, if his suspicions are true. By chance he meets an old friend, Lotario, who seems the ideal person to carry out his plans. What Anselmo does not know is that his friend is a real womanizer who ends seducing his wife.
| Directing | José María Forqué | Director |
| Camera | Cecilio Paniagua | Director of Photography |
| Art | Juan Casado | Property Master |
| Writing | Jaime de Armiñán | Writer |
| Camera | Ramiro Sabell | Assistant Camera |
| Costume & Make-Up | Paquita Pons | Seamstress |
| Lighting | Casimiro Dengra | Electrician |
| Art | Flavio Mogherini | Set Decoration |
| Production | Aurelio Serafinelli | Production Manager |
| Writing | José María Forqué | Writer |
| Writing | Giuseppe Mangione | Writer |
| Production | Serafín García Trueba | Production Assistant |
| Sound | Marcel Royné | Sound |
| Camera | Clemente Manzano | Camera Operator |
| Camera | Adolfo Troiani | Assistant Camera |
| Production | Alfredo Matas | Producer |
| Costume & Make-Up | Dolores Clavel | Hairstylist |
| Camera | Manuel Martínez | Still Photographer |
| Sound | Roberto Pregadio | Music |
| Camera | Mario Sensi | Camera Operator |
| Writing | Edoardo Anton | Writer |
| Sound | Romano Rizzati | Music |
| Costume & Make-Up | Salvatore Cotroneo | Hairstylist |
| Costume & Make-Up | Carmen Martín | Makeup Artist |
| Editing | Petra de Nieva | Editor |
| Writing | Miguel de Cervantes | Novel |
| Directing | Sinesio Isla | Assistant Director |
| Editing | Isabel Campos | Assistant Editor |
| Production | Nicola Princigalli | Production Assistant |