Mario and Filippo are two twin brothers, the honorable one want to bring morality back into Italian political life, as president of the Commission for the investigation of corruption. The other brother is a cynical trickster.

Vittorio Gassman
as Mario Agasti / Filippo Agasti

Lisa Gastoni
as Alma - moglie di Mario

Adrienne La Russa
as Kitty

Giampiero Albertini
as Santarini

Ennio Balbo
as Suocero di Agasti

Umberto D'Orsi
as Roberto Franceschini 'Pampero'

Fiorenzo Fiorentini
as Bertieri

Marisa Fabbri
as Wife of Mattia

Ettore Mattia
as Minister Mattia

Lino Banfi
as Journalist (uncredited)