The Bad Tempered Boyfriend - S9.E5

18 year old Erin Chorney goes missing. Investigators immediately suspect her abusive boyfriend, Michael Bridges, but do not have enough evidence to arrest him. Over a year later, they turn to police for help. Officers go undercover as figures in charge of a powerful criminal organization. They tell Bridges that if he comes clean about his past, they will be able to trust him to join their association. When Bridges confesses to murdering Chorney, police move in and finally get their man.