Arturo de Córdova as Juan Carlos Lozano

Carmen Molina as Ana Maria

Miguel Ángel Ferriz Sr. as Dr. Eugenio Britel

Queta Lavat as Rosa Martínez

Chela Campos as Cantante

Fernando Galiana as Detective en Guadalajara

Armando Sáenz as Novio de Rosa

Ramón Sánchez as Hampón en cabaret

Kika Meyer as Prostituta asesinada

Wolf Ruvinskis as El Monstruo

Julio Daneri as Jefe de Detectives

Matilde Palou as Madre de Juan Carlos

Josefina Burgos as (uncredited)

Gregorio Acosta as Hombre en cabaret (uncredited)

Emilio Garibay as Hombre en cabaret (uncredited)

Juan Orraca as Hombre en cabaret (uncredited)