An Army veteran kills the head of his girlfriend's household after confronting him about sexually assaulting the young woman. After hearing a recording of the fight, investigators must decide if this was vigilante justice or self-defense.

A cosplay model makes a frantic 911 call, claiming she awoke to find her partner stabbed to death. Surveillance footage from the home leads authorities to the killer, but it also raises the question of whether it was self-defense or murder.