Original air date: 07/02/2013 Runtime: 57:35 min. A chance encounter means Luther might be on the verge of finding love. But nothing comes easily - not when a fetish killer is on the hunt, not when an internet tormentor has had the tables turned and not when his worst enemies are his own colleagues.
Original air date: 07/16/2013 Runtime: 58:43 min. Luther must confront his demons when a vigilante killer embarks on a crusade to punish past offenders. Meanwhile the campaign within the force to bring him down knows no bounds, threatening everything Luther holds dear and pushing him to his limits.
Original air date: 07/23/2013 Runtime: 58:36 min. Accused of crimes he hasn't committed, Luther must work quickly to clear his name and stop the vigilante killer from becoming a martyr. But in becoming the killer's target, it's not just his own life he risks, but the lives of those he loves.