Donna Yaklich (S03E01)

A 31-year-old woman lives on a farm in Pueblo, Colorado, with her husband, a narcotics detective, and their son along with four stepchildren. One night in December 1985, gunfire erupts, and her husband is shot dead. The initial focus of the investigation is on the drug criminals he was pursuing. However, as the police dig deeper into his tumultuous family life, they start to consider that the person responsible for his death might be someone much closer than they initially thought.