Carissa Marie Rivers, 29, was shot and killed in the early hours of October 2, 2016, in Keokuk, Iowa. Police responded to reports of shots fired in an alley near a local bar shortly after midnight and found her unresponsive; she was taken to Keokuk Area Hospital and pronounced dead. Her death was ruled a homicide.

Investigators, with help from the Iowa Division of Criminal Investigation, focused on one primary suspect, 39-year-old Russell J. Tallman, identified as Carissa’s ex-boyfriend. Carissa’s mother reported that Carissa had recently ended the relationship after Tallman had threatened to kill her.

Later that day a tactical team executed a search warrant at Tallman’s Franklin Street residence and found Tallman in the basement with an apparent self-inflicted gunshot wound to the head. With the only suspect deceased, authorities considered the case closed. Did anyone who knew Carissa or her movements that night see anything that could shed light on what happened in the alley?