Anthony Steffen as Lieutenant 'Garringo' Harris

Solvi Stübing as Julie

Raf Baldassarre as Damon

Frank Braña as Bill

José Bódalo as Sheriff Klaus

Antonio Molino Rojo as Harriman

María Salerno as Nancy Grayson (as Marta Monterrey)

Peter Lee Lawrence as Johnny

Luis Marín as Pete, Bounty Hunter

Barta Barri as Wilson (as Barta Barry)

Rossana Rovere as Sarah

Lorenzo Robledo as Deputy Sheriff Tom

Luis Induni as Dr. Grayson

Guillermo Méndez as Johnny's Henchman

Xan das Bolas as Potter (uncredited)

Beni Deus as Padre de Johnny (uncredited)

Tito García as Ted (uncredited)

Rafael Hernández as Militar (uncredited)

A. Lawrence as Johnny de niño (uncredited)

Ángel Menéndez as Coronel (uncredited)

Mario Morales as Telegrafista (uncredited)

José Moreno as Fred (uncredited)

Maribel del Pozo as Julie de niña (uncredited)

Alfonso Rojas as Coronel (uncredited)

Carlos Romero Marchent as Bob (uncredited)

Santiago Santos as Amigo de Sam y Bill (uncredited)