Just like that, Luther went from an intense psychological drama to an action drama on 24 levels. The standalone story of a soldier on a cop killing spree is very predictable, but the stakes are unbelievably high. First he snipes multiple officers and then blows up an entire building filled with more cops! Of course we know Luther is safe, but the scale of death is something we never see on procedurals.
Likewise, the Luther stuff, being on the edge literally and figuratively is too predictable. Alice, however, remains as scary as ever, playing games with Luther and Zoe without restraint.
Score: 8.6/10