Marilyn Duffie, 31, was shot and killed on October 18, 2016, in the Eden Green neighborhood of Chicago. She lived in the apartment with her cousin Tiera Graves. The cousins had a fraught relationship and often argued about apartment cleanliness and Duffie’s behavior around Graves’ son.

On the evening of October 18, an argument escalated after Duffie cut her hand on a fish tank and went to a neighboring apartment to clean it. While there she loudly complained about Graves; the dispute continued in the hallway and moved outside. Graves, who had a handgun, shot Duffie in the chest. Duffie collapsed in the front yard and was pronounced dead at Advocate Christ Medical Center in Oak Lawn.

Tiera Graves, 28, was arrested and charged with first-degree murder. Graves told investigators she shot Duffie in self-defense, saying Duffie had threatened her with a knife and that she had called 911 multiple times without officers arriving. Graves was held on a $1 million bond and faced trial for the killing.

Did anyone living in Eden Green at the time hear or see anything that could clarify what happened that night?