At last, a resolution of sorts. The Fourth Man, formerly the con artist known as H, was finally revealed to a nation who have gorged on red herrings and deep fried dead ends since the wee donkey was just a wee foal. Yet when the great reveal came, it was still a bit of a shock to everyone, including AC-12. ‘He’s been under our noses since the beginning,’ cried DI Steve Arnott (Martin Compston). ‘What does this make us look like?’ wailed DI Kate Fleming (Vicky McClure). What indeed? Anyone who mentions the Keystone Kops will be arrested on sight.