Charles Bronson as Holland

José Ferrer as Dr. Hector Lomelin

Theresa Saldana as Rhiana Hidalgo / Nancy

Joseph Maher as Dr. Clement Molloch

René Enríquez as Max Ortiz, Holland's contact in Nicaragua

John Glover as Paul Briggs, U.S. Embassy

Raymond St. Jacques as Randolph, Molloch's Bodyguard

Antoinette Bower as Claire, Molloch's Sister

Enrique Lucero as Colonel Victor Aristos

Jorge Luke as Cillero, Molloch's Chauffeur

Mischa Hausserman as Karl

Roger Cudney as Cannell

Constanza Hool as Isabel

Joe Seneca as Santiago

Jorge Zepeda as Victim

Miguel Ángel Fuentes as Latino

Ernesto Gómez Cruz as Café Owner

Angélica Aragón as María

Jorge Humberto Robles as Jorge