Lisa Karen Addington was 22 and in Tulsa, Oklahoma, in May 1984 to prepare for a wedding just days away when she disappeared. On the night of May 15 she was at a bachelorette party at The Great Escape Club at 21st Street and Garnett Road. Around midnight her friends left; Lisa chose to stay and was last seen talking with an unidentified white man in his mid‑20s, about 6 feet tall, 160 pounds, with collar‑length brown hair and wearing a green shirt. It is not known whether she left the club with him or alone.

At the time she went missing Lisa was 5 feet 8 inches, 125 to 130 pounds, with shoulder‑length wavy brown hair and green eyes. Police classify the case as a suspected homicide. Investigators examined a man named Gary Alan Walker in connection with several Oklahoma murders that month but found no evidence linking him to Lisa. The man at the bar has never been identified and Lisa has not been heard from since.

If anyone knew Lisa, the unidentified man she spoke with that night, or has information about her movements after leaving The Great Escape Club, please come forward.