Lee Marvin is a crazed American serial killer on the loose in Mexico City who kidnaps an 11-year-old boy who is the only witness to his most recent murder. The boy is the son of down-and-out musician Ricardo Montalban, who frantically searches the city for his son and the psychopath who took him, and in the process hooks up with lovely Anne Bancroft. The Mexico City Police Department joins the pair in their hunt. Marvin is quite good for the most part--although he goes over the top on occasion--and Bancroft looks beautiful but doesn't have all that much to do. Montalban, unfortunately, crosses into "ham" on too many occasions, and the ending is trite and pat. Good use of Mexico City locations works in the film's favor, but the less-than-inspired writing, somewhat sloppy direction and Montalban's overacting work against it. Its good points and its bad points more or less cancel either each out, and the end result is that, while the film manages to hold your interest and has some tense moments, it's somewhat overheated and basically pedestrian.And, contrary to what several posters believe, it is not in any way, shape or form a "film noir" piece.

A serial killer (Lee Marvin) has Mexico City in a state of unease as he stabs his young female victims and leaves them with their arms folded. It's a bizarre part for Marvin and he does it perhaps like no one has ever seen him. He kidnaps the only witness to his last deed, an eleven year old boy, who is forced to accompany him over the course of a night in which one scene has them in church and Marvin is praying and asking God who he should kill next while the boy watches him and looks for a way to escape. The boy's father (Ricardo Montalban) is widowed and an unemployed musician, and the neighbors who live next door are angling to take the boy away from him due to his lack of money and instability. Montalban is OK in the film, but the emergence of Anne Bancroft as another out of work and broke character, whom he meets in a pawn shop run by the mean and greedy Dona Lucrecia, is quite interesting. As Marvin is on the run with the boy, night becomes morning, and the police dragnet is closing in. The film is a decent balance of the two strands, the fight over the boy and Marvin's psycho serial killer. The boy's character brings them (the two strands) together fairly well as the night unfolds and the police eventually close in.

A Life in the Balance: even the name bespeaks noir. So, not surprisingly, destiny has a nasty shock in store for out-of-work widower Montalban, who is struggling to make a secure home for his motherless little boy. Neighbors are threatening a custody action, and a smitten ex-lover is resisting repayment of a large loan. And then father and son fall beneath the sinister shadow of maniacal psychopath Lee Marvin. Unware of the terrible turn of events, Montalban bounds fatefully into the Mexico City night. In a pawn shop, he meets Anne Bancroft, a prim, down-on-her-luck lady who is bereft of either street smarts or employment. As the two sally forth into the lights and activity of a holiday festival, his son is in the midst of a far different and dangerous pursuit on dark, deserted streets. Montalban looks sensational, but he is, after all, playing an everyman and conducts his characterization accordingly. Bancroft, though attractive, is unglamorously so and is most appealing in her emotional and intellectual reactions to Montalban. Their relationship, though expeditiously developed, seems deeper and more credible than many seen in classic movies. The plot spins out smoothly, and the settings are well suited to the story. As well as obscure avenues and alleyways, crowded tenement, and typical hock shop, a police station and cavernous cathedral enhance the somber mood. It all makes for a somewhat soft-soaped, somewhat predictable, but nonetheless interesting bit of noir.

I saw this film today and have to say that it was magnificent! I am responding here to earlier reviewers that obviously don't know what they are talking about. One reviewer from Canada states "El Stinko Noir!" well he obviously has no film taste! In an early film role for Ricardo Montalban he plays an out of work man in Mexico who smashed a music machine for printing out terrible music His son Paco seems to get around and finds "The Killer" played by Lee Marvin. Lee Marvin in this film hardly seems like a menacing or insane killer, but seems to have tendencies of insane behavior.Anne Bancroft has never been lovelier, and seems to have a pedestrian role. For those who like Mexican cinema if you liked "Sombrero" you will love this film (*** out of ****) PS: This is not a film noir and anyone who thinks so is an idiot!!