Sharon Arlene Milburn Hance was 52 when she was killed in Helena, Montana; her death occurred on May 18, 1990. Authorities discovered her death that spring and launched an investigation that has extended for decades, but crucial facts about what happened that day remain elusive.

Despite periodic reviews and hopes that advances in forensic technology or a new witness might break the case, no arrests have ever been announced and no suspect identity has been established. The investigation is described as cold, leaving family and community without closure.

If anyone knew Sharon, was in Helena around May 1990, or has information about her movements or contacts in the weeks before May 18, please come forward.