A thief caught red-handed tells the landlord a very strange fact that happened to him looking through the keyhole of another apartment where he was stealing.
| Actor | Role |
|---|---|
 Fernando ReyIl professor Rune | Il professor Rune |
 Stefania SandrelliJolanda Kador | Jolanda Kador |
 Carlo GiuffrèIl ladro | Il ladro |
 Galeazzo BentiIl padre | Il padre |
 Cinzia LeoneLuisa | Luisa |
 Paolo BonacelliCarl Rune | Carl Rune |
| FFiorenza MarchegianiOlga | Olga |
 Diego AbatantuonoL'inquirente | L'inquirente |
 Biancamaria LelliAdele | Adele |