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Case Description

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Summary based on the NamUs case record (MP79498) and 8 other sources
In the winter of 1955, a 33-year-old woman named Aletha Capps vanished from Douglas County, Colorado, leaving behind a perplexing case that has remained unsolved for decades. On December 17th, she was in the company of a man named Alva C. Quillin Jr. The two were reportedly seen at the Gold Coin Cafe in Victor, Colorado, where they were denied service due to being intoxicated. Later, they were spotted at the Home Cafe in Cripple Creek, where Aletha had a glass of milk and Quillin consumed three beers. This would be the last time anyone other than Quillin would report seeing Aletha. Her disappearance is particularly concerning as she had a serious heart condition that required medication multiple times a day, and she was physically unable to walk more than a short distance without collapsing.

According to Alva Quillin's account of the events that followed, he and Aletha went for a drive along Rampart Range Road near Castle Rock. Their vehicle allegedly skidded off the road and became stuck in a snowbank, forcing them to spend the night in the car. Quillin claimed that the next day, he hiked over a mountain to Palmer Lake to find help. Upon his return to the stranded vehicle, he said that Aletha was gone. An extensive search of the area yielded no trace of Aletha. Quillin's story, however, raised suspicion among investigators. He failed a polygraph test regarding Aletha's disappearance, and authorities stated they believed he knew more than he was revealing. His narrative also shifted slightly during the investigation; he later claimed that Aletha had suffered a heart attack after the car became stuck and that she disappeared while he was seeking assistance.

Despite the inconsistencies in Quillin's statements and the suspicious circumstances surrounding her disappearance, no charges were ever filed in connection with Aletha Capps's case, and her body has never been found. Aletha was divorced at the time she went missing but maintained occasional contact with her ex-husband, who never heard from her again after that day. The fact that she was without her essential heart medication made her survival for any extended period highly unlikely. Alva Quillin Jr. passed away in 1992, taking any potential secrets about Aletha's fate to his grave. The case of Aletha Capps is an enduring mystery, a story of a vulnerable woman who vanished into the cold Colorado winter, leaving her loved ones with unanswered questions. The investigation, centered on the inconsistent testimony of the last person known to have seen her, ultimately grew cold, and her disappearance remains an unresolved chapter in the history of Douglas County.

Last Seen: Dec 17, 1955

Possible Unidentified Matches (1)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

76%Possible
Jane Doe — Colorado
UP14596 • Found Apr 3, 1985
View case
Sex ✓Female
Age 100%Est. 50–60 vs 33 when missing
Race 100%White
Location 87%56 mi away, same state
TimingFound 29 years after last seen
Height 100%5'1"–5'5" vs 5'0"
Hair 100%Brown vs Brown

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.