Mexico City is swathed in a reign of terror, as a fanatic serial killer (Lee Marvin) preys on women...and circumstantial evidence ties a single father musician (Ricardo Montalban) to his latest victim. Can the entertainer's young son (José Pérez), who witnessed the crime, flush the real murderer from hiding? Tight little thriller co-stars Anne Bancroft. 74 min. Standard; Soundtrack: English Dolby Digital mono.