Robert Hoffmann
Tony Harris
Nathalie Delon
Monica Stiles
Martin Balsam
Inspector Jim Grant
Sherry Buchanan
Karin Hale
V
Victor Valente
Coleman Perry
Sergio Rossi
Leader of 'The Silencers'
Mario Novelli
The Silencers Henchman
Franco Garofalo
Peter Collins
G
Giovanna De Luca
Bruno Di Luia
The Silencers Henchman
George Ardisson
Agent for 'The Silencers'
Franco Beltramme
Phillips - Inspector Grant's Assistant
Tom Felleghy
Commander Smith
Cesare Nizzica
Farmer
Carlo Hintermann
Air Marshal Thompson