The plot follows Manlio, an established, sophisticated architect, and his much younger wife, Cecilia. Feeling constantly neglected due to her husband's disinterest and age gap, Cecilia takes a lover out of spite to provoke a reaction.
| Actor | Role |
|---|---|
 Enrico Maria SalernoManlio Santi | Manlio Santi |
 Pier AngeliCecilia | Cecilia |
 Jean-Guy RuffPaolo Santi, figlio de Manlio | Paolo Santi, figlio de Manlio |
 Špela RozinNot listed | Not listed |
| RRenato ChiantoniNot listed | Not listed |
| GGustavo D'ArpeNot listed | Not listed |
| AAnna GoelProstituta | Prostituta |
 Carla ManciniNot listed | Not listed |
 Mirella PamphiliCameriera | Cameriera |
 Giuliano RaffaelliAvvocato | Avvocato |
| WWilliam TreccaniNot listed | Not listed |
| SSimonetta VitelliRagazza bionda nel locale di biliardo (uncredited) | Ragazza bionda nel locale di biliardo (uncredited) |