Imogene Jackson, 28, was found dead inside her St. Louis apartment bedroom on March 10, 1988. Investigators reported she had been strangled and sexually assaulted; there was no sign of forced entry, which led police to focus on people familiar with the building and its routines. Attention narrowed toward a man described as acquainted with both Jackson and another woman killed in the same building’s orbit, and investigators later linked the case to a series of similar rapes and strangulations of women in St. Louis.

Authorities arrested Jerry Lee Little Jr. on August 4, 1988, on charges that, according to charging documents and published accounts, included multiple murders, rapes, and a robbery tied to the cluster of cases. Investigators said Little confessed during interrogation and that the confession was recorded. Little went on trial in September 1990, with the state trying multiple charges together; reports say the defense challenged the confession and raised questions about his mental state, but the proceedings ended in convictions and life sentences in October 1990.

Did anyone who knew Imogene or lived in that building at the time notice a person who came and went from the hallways or had concerns about safety that spring of 1988?