Margaret Renee Armbrust was 25 when she and her husband, Anthony Armbrust, moved from California to an apartment in Golden, Colorado in late 1973. The couple vanished not long after the move; their last known communications were letters to church members in San Diego asking that the church retrieve their belongings and their puppy. Margaret was last seen on January 1, 1975, and church members who checked the Golden apartment found it empty but the puppy alive.

On February 11, 1974 a body was found in Park County on Guanella Pass at the bottom of a steep, rocky area. That man was buried as a John Doe until remains exhumed in 2017 yielded DNA that, via genetic genealogy, identified him in October 2020 as Anthony Armbrust. Investigators have suggested the couple may have traveled to the Colorado mountains while Anthony was terminally ill and that Anthony may have slipped while climbing rocks, but Margaret’s fate remains unknown and her disappearance is an active CBI investigation.

Did anyone in the area around Golden or Guanella Pass have contact with Margaret after January 1, 1975?