A self-taught amateur detective who learned his trade from a book finds himself caught between two gangs in Milan, trying to recover a wooden leg full of drugs. He is accompanied by an unlikely trio: a deaf secretary, an undertaker and a monkey.
Henri Salvador
Gregg
Valeria Fabrizi
Morenita
Memmo Carotenuto
Sam Pestalozzo
Aldo Giuffrè
Manone
Nino Taranto
Don Cicillo
Francis Blanche
Capitano Fornace