Pino Colizzi

as Alfredo Wiel

as Zio Vincenzino

as Ing. Martelli

as commissario Giannetti

as Peterson (voice) (uncredited)

as Enrique

as Commissario Sarti

as Dr. Filippo Cinti

as Tiziano Ballarin

as Commisario Alberto Cottone (as Giuseppe Colizzi)

as Renzoli