Lois Petrie, a 43-year-old widow from San Pedro, Los Angeles, was last seen alive at a local bar on Christmas Day, 1972. Her partially nude body was found the next day in her bedroom. An autopsy determined she had been sexually assaulted and strangled; strangulation was listed as the cause of death.

Investigators at the time found few leads because the perpetrator left little evidence. The case went cold for decades until forensic technology advanced and detectives re-examined old evidence. In 2002 DNA testing linked the crime to Adolph Theodore Laudenberg, a cab driver who has been connected to several murders of women in the 1970s and who reportedly used a pattern of binding, sexual assault, and strangulation.

Does anyone have information about Lois’s last known movements on December 25, 1972, or recollections of the bar where she was seen that day?