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.