"A widower's young son leads the police to a killer of sinners in Mexico City."
Ricardo Montalban
as Antonio Gómez
Anne Bancroft
as María Ibinia
Lee Marvin
as The Killer
José Pérez
as Paco Gómez
Rodolfo Acosta
as Lt. Fernando
Carlos Múzquiz
as Capt. Saldana
Jorge Treviño
as Sergeant
José Torvay
as Andrés Martínez
Eva Calvo
as Carla Arlota
Fanny Schiller
as Carmen Martínez
Tamara Garina
as Doña Lucrecia
Pascual García Peña
as Porter (as Pascual G. Pena)
Tony Carbajal
as Pedro (as Antonio Carbajal)
Mildred Gusse
Casting
Gunther Gerszo
Art Direction
Sara Mateos
Makeup Artist
Sara Maza
Hairdresser
Ricardo Beltri
Unit Manager
John Burch
Production Manager
Assistant Director
Julio Cahero
Jesús González Gancy
Sound
Galdino R. Samperio
Manuel Gómez Urquiza
Camera Operator
Leobardo Sánchez
Assistant Camera
Icaro Cisneros
Script Supervisor
Harry Horner
Director
Rafael Portillo
Robert Presnell Jr.
Screenplay
Leo Townsend
Leonard Goldstein
Producer
Raúl Lavista
Original Music Composer
George Crone
Editor
George A. Gittens
Georges Simenon
Novel
