As enjoyable as “Luther” has been through its first two seasons, “Luther” does seem to suffer from a case of diminishing returns. Luther has a new love interest this season, Mary Day (Sienna Guillory), but she’s not particularly interesting and she becomes even less interesting once wily serial killer Alice Morgan (Ruth Wilson) pops up again in the fourth episode. Alice, a distaff Hannibal Lecter, and Luther had a strong bond in the show’s first season and it was hugely disappointing that she was absent from season two.
In season three, it’s quite a long slog to get to Alice’s return. There’s a lot of barbarism and sadism to wade through to get to the fun character stuff that Alice brings. Initially, Alice seemed just as important to the show as Luther, and while it made some sense that writer Neil Cross couldn’t go to the Alice Morgan well too often – leaving her out of season two was probably necessary since she’s a criminal, albeit a criminal who shares a strong chemistry with Luther – you have to wonder if she’s back in season three, why stick her in just the final episode?
The first two episodes (10 p.m. Tuesday, 9 p.m. Wednesday) tell one crime story; episodes three (10 p.m. Thursday) and four (10 p.m. Friday) tell another story, this one of a vigilante seeking vengeance against violent criminals after his wife is murdered.
Elba remains a magnetic presence but as with all damaged heroes, Luther presents a problem for drama writers: Heal him and he’s less interesting; perpetuate his damage and the show gets repetitive. “Luther” seems stuck in the latter cycle.
It’s a relief to learn this is the final season of “Luther,” though reports suggest a prequel movie may be in the works. Maybe it’s also time to proceed with that proposed Alice Morgan spin-off series. Then Luther can be the special guest star in Alice’s sure-to-be demented stories.