Richard Greene as Agente del Tesoro Lee Scott

Anouk Aimée as Elena Vargas

Michael Denison as Agente británico Ricky Metcalfe

José Nieto as Pierre, secuaz principal

Alfonso Estela as Secuaz

Philip Saville as Martin Scott

Antonio Almorós as Lucien Remue, secuaz

G.H. Mulcaster as Coronel Ingleby

Conrado San Martín as Secuaz

Robert Ayres as Sr. Dean, superior de la Embajada de los Estados Unidos

Richard Warner as Inspector LeGrand, de la Surete

John Warwick as Bryant, director del polideportivo

Arnold Bell as Oficial de la cárcel

Olive Milbourne as Mrs. Ingleby

Jesús Colomer as (no acreditado)

José Ramón Giner as (no acreditado)

Ramón Martori as (no acreditado)

Rafael Albaicín as (no acreditado)

Max Brimmell as Fotógrafo (no acreditado)

Alex Gallier as Head Waiter (no acreditado)

Lloyd Lamble as Funcionario de la Embajada (no acreditado)

Andreas Malandrinos as Proprietario de la revista Gautier (no acreditado)

John Welsh as Oficial superior de aduanas (no acreditado)

Christopher Lee as Narrador (voz)