Glenn Forest
Roger Browne
Helga
José Greci
John Parker
Sancho Gracia
Omar
Roberto Messina
Russian agent
Carla Calò
Frank
Andrea Scotti
Glenn's girlfriend
Helga Liné
Ángel Ter
Writer
Osvaldo Civirani
Director
Music
Piero Umiliani
Roberto Gianviti
Director of Photography
Alfonso Nieva