Anna Marie Hlavka was 20 and living in Portland, Oregon, when she was found murdered in her apartment on the night of July 24, 1979. She shared the modest brick building with her sister Rose Ann and worked at a nearby McDonald’s. Rose Ann returned about 10 p.m., called for Anna, and then discovered her sister’s body in the bedroom. Anna had been sexually assaulted and strangled; the electric cord from her clock radio was used as the ligature.

Investigators pursued leads for decades, administering polygraphs and questioning suspects, but the case went cold. In 2009 retired detectives sent preserved evidence for testing and a full male DNA profile was recovered from beneath Anna’s fingernails, but it produced no match in the national database. Records place McFadden in the Pacific Northwest in 1979, and DNA from his relatives confirmed the match. McFadden had been executed in Texas in October 1999, so he never faced prosecution for Anna’s murder.

Anyone who knew Anna, her circle in Portland in 1979, or who remembers details about that neighborhood the night she was killed is asked to come forward with information.