On the evening of October 2, 1985, 25-year-old Sheree Warren finished her workday at the Utah State Employees Credit Union in Salt Lake City. A coworker saw her walking to her car in the parking lot around 6:30 p.m. Sheree, a mother to a three-year-old son, was in the middle of management training and navigating a difficult period in her personal life. She was separated from her husband, Charles "Chuck" Warren, and their divorce was pending. Her plan for the evening was to meet Charles at a nearby car dealership to give him a ride home to Ogden, after which she would pick up their son and return to her parents' house in Roy, where she had been staying. However, Sheree never arrived at the dealership, never picked up her child, and was never seen or heard from again.
The initial investigation into Sheree's disappearance quickly focused on the two men central to her life: her estranged husband, Charles Warren, and her new boyfriend, Cary Hartmann.
Charles Warren told police that he had canceled his plans with Sheree that evening and had gone for a jog instead, an alibi that investigators were unable to confirm. He and his first wife, with whom he had reconciled, initially agreed to take polygraph tests but later changed their minds and ceased cooperating with the investigation. Investigators learned that he and Sheree had contentious arguments regarding alimony and child support leading up to her disappearance. Charles Warren, who passed away in 2022, was never officially cleared as a suspect in his estranged wife's vanishing. The other person of interest, Cary Hartmann, was a former reserve police officer for the Ogden Police Department. Years after Sheree disappeared, Hartmann was convicted as a serial rapist and sent to prison for his crimes.
Weeks after she vanished, a significant piece of evidence surfaced hundreds of miles away. On November 11, 1985, Sheree's maroon 1984 Toyota Corolla was discovered in the parking lot of the Aladdin Hotel and Casino in Las Vegas, Nevada. The vehicle appeared to have been parked there for some time, but its discovery offered no clues as to Sheree's whereabouts or what had happened to her. Over the years, the investigation has seen various leads and theories. In 1987, an anonymous caller repeatedly contacted police, claiming to have found a decomposed woman's body in a remote area near Causey Reservoir, a location where a witness reported seeing Cary Hartmann just days after Sheree disappeared. Despite extensive searches of the mountainous terrain, including an excavation in 2023, no remains were ever found. Sheree's family had her legally declared deceased in the 1990s, but the search for answers continues. The case remains an active and unsolved cold case, leaving her loved ones without closure, haunted by the question of what happened to the young mother who seemingly vanished after leaving work one autumn evening.Last Seen: Oct 2, 1985
