George Hilton
George Corro
Conchita Airoldi
Carol Brandt
Carlo Alighiero
Commissioner
Alberto de Mendoza
Neil Wardh
Bruno Corazzari
The Killer
Marella Corbi
Victim Who Escapes from the Killer
Miguel del Castillo
Spanish Doctor
Brizio Montinaro
Party Guest
Pouchi
Victim in the Shower
Giuseppe Marrocco
Neighbor (uncredited)
Francesco Narducci
Police Photographer (uncredited)
Oscar Sciamanna
Party Guest (uncredited)