On December 22, 1966, in North Hollywood, Los Angeles, 38-year-old Julia Cook and her 15-year-old son, Kenneth, were found murdered in their home. Both had been forced to kneel and were each shot twice in the head. Julia Cook had a criminal record related to drug possession. Authorities suspected that Robert Biehler, a known criminal associate of Cook's, feared she might inform the police about his involvement in a prostitution ring, which could have been a motive for the killings.
Following the murders, police detained Biehler and an acquaintance, Morton Molin, for parole violations and attempted to charge them with the homicides. However, due to insufficient evidence, the charges were dropped. Biehler was subsequently incarcerated for the parole violation, while Molin faced trial for unrelated offenses. Despite extensive investigations, authorities were unable to charge either individual with the Cook murders at that time.
After his release in the early 1970s, Biehler continued his criminal activities, including burglaries and pimping. He was later convicted of multiple murders and sentenced to life imprisonment. The tragic deaths of Julia and Kenneth Cook remain a somber chapter in Los Angeles' criminal history.