Christopher Mitchum as Derek Timothy Carpenter

Christopher Lee as Luis Morel

Cristina Higueras as Linda

Brigitte Lahaie as Mauria

Richard Harrison as Lt. Sparks

Henri Lambert as Antonio

Alicia Moro as Elena Barrios

Daniel Katz as Mr. Barrios

Antonio Mayans as Dr. Merrill Ramos (uncredited)

Carmen Carrión as (uncredited)