Details of Disappearance
Cynthia was last seen in Osage, Oklahoma on June 23, 1976. She was last seen at Osage Laundromat. Her aunt and uncle owned the laundromat and Cynthia worked there. She has never been heard from again
After her disappearance, Cynthia's purse and drink were found at the laundromat, as well as a half-finished donut. Witnesses said she left the laundromat at 9:30 a.m. and got into a faded beige 1965 Plymouth Belvedere with two people. One witness said the two people were a man and a woman, and another witness said they were two women in their twenties.
After her disappearance, there were several reported sightings of Cynthia. She was supposedly traveling around southern Kansas with a religious group. Authorities were never able to confirm the sightings, however.
A witness reported she had seen Hobart Green with Cynthia just minutes before Cynthia disappeared. The alleged sighting was not reported until 1991. In 1986, Hobart pleaded guilty to second-degree murder in the death of his baby son.
He is also a suspect in the 1961 disappearance of his ex-wife, Maxine Beatrice Green. Her body was never found and Hobart has never been charged in her case, but the couple's daughter, then twelve years old, said she witnessed her father murder her mother and bury the body. Authorities haven't said whether they have verified that Hobart was in fact with Cynthia on the day of her disappearance, or whether he's a suspect in her case.
In 2023, Dennis Rader, the BTK serial killer, stated authorities had interviewed him twice about Cynthia's disappearance. Rader murdered ten people in Wichita, Kansas, two hours away from Osage, between 1974 and 1991. He was identified and arrested in 2005, and subsequently pleaded guilty to ten slayings. He is serving multiple life sentences.
Rader's daughter noted Cynthia's apparent abduction does not resemble her father's crimes, which involved stalking and home invasion attacks on victims. He did, however, keep a journal with cryptic notes of his crimes, and one of his 1976 entries was titled "PJ [short for project]-Bad Wash Day", referred to a brunette as "the target" and said he would "watch the nearby Laundry Mat for possible victim." These details match Cynthia's case.
Cynthia was a high school junior at the time of her disappearance, was popular, made good grades and had just made the varsity cheerleading team. She is missing under suspicious circumstances and may have been taken against her will.