Conrado San Martín
Inspector Tanner
Diana Lorys
Wanda Bronsky / Melissa
Howard Vernon
Dr. Orloff
Perla Cristal
Arne
María Silva
Dany (as Mary Silvers)
Ricardo Valle
Morpho Lodner
Mara Laso
Irma Gold
Venancio Muro
Jean Rousseau 'Jeannot'
Félix Dafauce
Chief Inspector
Faustino Cornejo
Raymond
Manuel Vázquez
Klein
Juan Antonio Riquelme
Fernando Montes
Malou (as Fernando C. Montes)
Elena María Tejeiro
Ursula Camila
Javier de Rivera
Ángel Calero
Sandalio Hernández
Fernando Sala
María de la Riva
(as Mª de la Riva)
Laly Vicent
José Carlos Arévalo
Enrique Ferpi
Rafael Ibáñez
Carmen Porcel
Madame Gold
Rafael Hernández
Marisa Paredes
Klemp
Luis Rico
Juan García Tiendra
False Suspect
Amy Márquez
Antonio Ramos
Luis Domínguez Luna
María del Carmen Ruiz
(as Mari Carmen Ruiz)
Pedro José Mariña
Pilar Gómez Ferrer
Wanda's Dresser
Tito García
Mercedes Manero
(as Mercedes Manera)
Antonio Ramos
Juan Antonio Arévalo
(as Juan Antº Arévalo)
Jesús Franco
Pianist (uncredited)