Fernando Montes

Dr. Phillippe Brighthouse

Howard Vernon

Dr. Vicas

Guy Mairesse

Hans Bergen

Antonio Jiménez Escribano

Dr. Zimmer

Marcelo Arroita-Jáuregui

Dr. Moroni

Cris Huerta

Dr. Kallman

Jesús Franco

Inspector Tanner

Daniel White

Inspector Green

Alberto Bourbón

Policeman

Francisco Camoiras

Fisherman (uncredited)

Mer Casas

Mrs. Moroni (uncredited)

Ana Castor

Juliana (uncredited)

Rafael Hernández

Assistant to Inspector Green (uncredited)

José María Prada

Policeman (uncredited)

Lucía Prado

Barbara Albert (uncredited)

Javier de Rivera

Notary (uncredited)

Vicente Roca

Police Doctor (uncredited)

Ángela Tamayo

Girl at the Nightclub (uncredited)