Geyer left her residence in Milaca, Minnesota on August 14, 1998. She was accompanied by a friend, Roseanna Marie Forcum, at the time. Neither Geyer nor Forcum have been heard from again.

There was little word on what may have happened to Geyer and Forcum until an informant came forward after their disappearance. The individual told authorities that Geyer and Forcum attended a party in St. Cloud, Minnesota during the evening of August 14. Geyer and Forcum may have attempted to hitchhike home after the party. The man stated that his friend strangled both women shortly thereafter at his apartment in St. Paul, Minnesota. The informant claimed that he assisted their attacker with the women's burials. The individual also stated that Geyer and Forcum were buried near farmland in Wadena County, Minnesota near the Leaf River. A search of the area produced no evidence as to their whereabouts. Investigators do not know if the informant was providing accurate information and his story has never been confirmed.

Authorities initially believed that Geyer and Forcum left their homes of their own accord, as they had a history of disappearing together for extended periods of time. Their loved ones said that both girls normally phoned their relatives shortly after each incident. Geyer's mother said that her daughter had been depressed since the drowning death of Geyer's boyfriend in 1997, one year prior to her disappearance. Geyer left behind a young son, whom her mother is now raising. Forcum completed a program for juvenile offenders shortly before disappearing in the summer of 1998. Their families believe the girls met with foul play.