Charles Bronson

as Gifford Hoyt

Jason Robards

as Gunther Beckdorff

Dominique Sanda

as Marie-Claire Allesandri

Fernando Rey

as Police Captain Torredo

Simon MacCorkindale

as Lewis Clarkson

Camilla Sparv

as Hera

Gilbert Roland

as Dr. Rudolfo Ramirez

Denny Miller

as Horst