The Disappearance of Robert Pillsen-rahier from a Treatment Facility

He asked his mother to come get him because he had something to tell her — something he couldn't say over a monitored phone line. She never got the chance.

Robert Thomas Pillsen-Rahier, 15, disappeared from a residential treatment facility in Colorado Springs, Colorado, on July 6, 1990. More than 30 years later, his case remains an active cold case with local police.

A Difficult Childhood

Robert was 7 when his stepfather, whom he'd grown close to, died by suicide; Robert was the one who found him. The loss affected him deeply, and he struggled with anger, depression, and self-harm in the years that followed, particularly after his family relocated to Colorado Springs and he faced significant bullying at school. At 15, following an incident in which he harmed a bully and police became involved, his mother, Jean, placed him at Cheyenne Mesa, a residential treatment facility for adolescents with behavioral and psychiatric needs, hoping it would help him.

A Call He Couldn't Finish

On the morning of July 6, 1990, Robert called Jean from the facility and told her he needed to tell her something important, but couldn't say it over the phone because calls there were monitored. He told her his situation had gotten bad enough that he wanted to leave. Jean asked him to wait for her to come get him.

A Disappearance With Conflicting Accounts

When Jean called the facility, staff told her Robert had gone on an outing and couldn't come to the phone. Later that day, the facility called back to say he had run away. Staff accounts of his final movements conflicted: one employee said Robert was last seen lying in a field on the property, while another said they saw him walking away from the building alone and didn't stop him. Robert's belongings were later returned to Jean, including both pairs of shoes he'd brought with him — a detail she found significant, since he had sensitive feet and disliked going barefoot.

A Troubling Detail

About a week before he disappeared, Robert had come home for a weekend visit. While washing his clothes afterward, Jean noticed blood in his underwear. She has said she believes he may have been sexually abused at the facility, and that this may be connected to what he was trying to tell her the day he vanished.

A Facility That Later Closed

Cheyenne Mesa closed in 1997 amid financial difficulties; the property was later reopened under different ownership as a separate treatment facility.

Still Searching

Robert's case remains listed as an active cold case with the Colorado Springs Police Department. Jean has continued advocating for answers in the decades since, maintaining that her son had no history of running away and that it would have been entirely out of character for him to cut off contact with his family for this long.

Anyone with information is asked to contact the Colorado Springs Police Department at 719-444-7000.

Frequently Asked Questions

Has Robert Pillsen-Rahier ever been found?
No. He remains missing, and his case is listed as an active cold case.

Was there ever an investigation into abuse at the facility?
His mother has publicly raised concerns about possible abuse based on physical evidence she found, but no formal findings connecting this to his disappearance have ever been made public.

Is the facility where he disappeared still open?
No. Cheyenne Mesa closed in 1997, though the property later reopened as a different treatment facility under new ownership.

Sources

This article touches on sensitive topics including suicide and self-harm. If you or someone you know is struggling, the 988 Suicide & Crisis Lifeline (call or text 988 in the U.S.) is available 24/7.