Adolfo Celi
Inspector Rizzi

Hugh Manning
Volpone
David Dodimead
Mosca

Mimmo Poli
Cook (uncredited)

Luigi Scavran
Massimo (uncredited)

Jack Benny
Violinist Outside Restaurant (uncredited)

Herschel Bernardi
Oscar Ludwig (uncredited) (scenes deleted)

Massimo Serato
The Pretender (uncredited) (scenes deleted)