Heather was last seen on May 26, 1997. She took a soda from the refrigerator and departed home at approximately 8:30 p.m. Heather may have visited a friend in rural Rantoul, Ill., that night. She left all her personal belongings at home. Extensive searches of the area produced no clues as to Heather's whereabouts. There have been no arrests in connection with Heather's case, which remains unsolved.
Heather has a tattoo of three red roses with a black stem on her left outer ankle; she is right-handed. To provide information on the disappearance of Heather Dawn Mullins Zimmerman, call the Champaign County Sheriff's Department at (217) 384-1213.