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.
as Michele Spillone detto Mike
as Marchese Vittorio De Vittti
as Dottoressa Brigitte Baker
as Madre del marchese De Vitti
as Avvocato Otello Bellomo
as Gennaro
as Professor Elia Vagoni
as Il maître della 'Conchiglia'
as Caterina
as Cameriere
as Romeo
as Capo dell'agenzia investigativa
as Ida
as infermiera
as Zia Ada Barbalunga
as Self
as Egisto
as Il signore al comizio (uncredited)
