Hill was last seen in Sandy, Utah on May 12, 1989. She left her apartment near 82nd South and 1220 East, telling her young child she would be back in less than an hour. Hill never returned and has never been heard from again. Hill took her wallet with her when she disappeared, but left behind her vehicle.

Thomas Evan Trujillo is considered a possible suspect in Hill's case. He and a co-defendant, Grant David Stensrud, were charged with murdering a man during a burglary in March 1990. After their arrests, one of Hill's prescription drug bottles was found in Trujillo's apartment. Her bloodstained purse was located in another apartment he rented, as was a woman's nightgown, underwear and jewelry. Trujillo and Stensrud, who have prior criminal records, pleaded guilty to the 1990 murder.

Trujillo has never been charged in connection with Hill's case. He maintains his innocence in her disappearance and says he does not know how her belongings came to be in his possession. He hosted many parties at his apartment and said he believes one of the guests left the items there without his knowledge.

Hill's loved ones obtained a death certificate for her in 1991. She was employed as a social worker with the state at the time of her disappearance. Authorities stated they believed she had been murdered, but her remains have never been located and her case remains unsolved.