Totò, Vittorio and the Doctor

The fake private detective Mike Spillone is hired by two old ladies to find out if Brigitte, the wife of their nephew Otello Bellomo, has a lover. Brigitte is a physician but the two aunts are unaware of the fact. While investigating, Mike and his assistant Johnny discover Brigitte with a prospective patient, the marquis De Vitti who was shot by the husband of the woman he tried to seduce. Afterwards Spillone finds her with her husband who he believes to be her lover.

• 
  Camillo Mastrocinque
• 
  Liana Ferri
• 
  Leonardo Scavino

• 
  Totò
  Michele Spillone detto Mike
• 
  Vittorio De Sica
  Marchese Vittorio De Vittti
• 
  Abbe Lane
  Dottoressa Brigitte Baker
• 
  Titina De Filippo
  Madre del marchese De Vitti
• 
  Germán Cobos
  Avvocato Otello Bellomo
• 
  Agostino Salvietti
  Gennaro
• 
  Rafael Bardem
  Professor Elia Vagoni
• 
  Franco Coop
  Il maître della 'Conchiglia'
• 
  Fulvia Franco
  Caterina
• 
  Dante Maggio
  Cameriere
• 
  Pierre Mondy
  Romeo
• 
  Luigi Pavese
  Capo dell'agenzia investigativa
• 
  Amelia Perrella
  Ida
• 
  Benedetta Rutili
  infermiera
• 
  Tecla Scarano
  Zia Ada Barbalunga
• 
  Teddy Reno
  Self
• 
  Darry Cowl
  Egisto
• 
  Arturo Bragaglia
  Il signore al comizio (uncredited)