You might think knowing that the apocalypse is nigh would make you slack off at work, but not Renko and Hicks.

This week the mismatched cops tackle a religious zealot-turned-serial killer – chillingly played by Richard Coyle – and Renko continues her investigation into her new partner.

Meanwhile, government spook Grace keeps turning up like a bad penny, and incites Renko’s son Daniel to violence when she visits his psychiatric unit.