Murder in the Heartland (2017)

S9E6 Marriage into Mayhem

Title: Matrimony and Misfortune Plot: When a local cattle rancher is found murdered in his trailer in the tiny town of Driscoll, ND, suspicion falls on each resident of the tight-knit community. With scant clues available, it takes more than ten years for investigators to finally zero in on the killer. [also shown as S6:E13]