Cynthia Atterberry, 25, disappeared near Pike National Forest in Castle Rock, Colorado, on or around June 27, 1981. Known as Cindy, she had moved from Springfield, Illinois, to Colorado in May 1981 with her 30-year-old boyfriend, Oscar Joseph Joe McNear Jr. The couple lived in a trailer on property owned by an associate of McNear’s and ceased all contact with families in Illinois after the move.

Investigators developed leads that pointed to possible foul play. Tips alleged Cynthia and Oscar were shot after an argument with two men from Springfield, their bodies placed in 55-gallon drums, and buried on land owned by one suspect near the South Platte River. A neighbor reported hearing a woman scream and gunfire around the time they vanished. A search of the area in 1985 produced no evidence.

No charges have been filed and the Douglas County Sheriff’s Office keeps the case open. Did anyone in the Castle Rock or Springfield communities at the time recall seeing Cynthia, Oscar, or suspicious activity near the South Platte River that summer of 1981?