"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)
Jesús González Gancy
Sound
Galdino R. Samperio
Leobardo Sánchez
Assistant Camera
Ricardo Beltri
Unit Manager
Gunther Gerszo
Art Direction
John Burch
Assistant Director
Mildred Gusse
Casting
Sara Maza
Hairdresser
Sara Mateos
Makeup Artist
Production Manager
Manuel Gómez Urquiza
Camera Operator
Icaro Cisneros
Script Supervisor
Julio Cahero
Rafael Portillo
Director
Raúl Lavista
Original Music Composer
George Crone
Editor
George A. Gittens
Leo Townsend
Screenplay
Harry Horner
Robert Presnell Jr.
Leonard Goldstein
Producer
Georges Simenon
Novel
