Two years after its brilliant second series, which put Keeley Hawes's DI Lindsay Denton through the wringer with harrowing intensity, Jed Mercurio's bent-coppers drama is back. This time it's Daniel Mays, as Sgt Danny Waldron, sitting in the crosshairs of Ted Hastings and his AC12 anti-corruption team.

It’s surprising how few dramas there are about the autistic spectrum. Dustin Hoffman’s turn in Rain Man (1988) misleadingly suggested that all sufferers are also geniuses. On British television Kid in the Corner (2001) was inspired by Tony Marchant’s experience as the parent of a child with Asperger’s (although the boy in the drama had ADHD).

It’s another military centenary, and another conundrum for broadcasters – how to tell a sombre story in an engaging way. The 1916 Dublin Easter Rising is an iconic event, but if we’re honest, not one many viewers will know in detail. The televisual warhorses for this kind of reminiscence – black-and-white portrait photos, sombre brass bands, and many talking heads atop camphor-scented tweed – are respectful but just a little bit dull. But to spice it up by choosing a paunchy, cross-dressing comedian in a curly wig to present? Dangerously flippant, surely?  

There was an eye-popping moment of high-risk bravura at the climax of Happy Valley. Murderous detective John Wadsworth (Kevin Doyle) had finally been cornered on a railway bridge and was all for leaping off. Sergeant Catherine Cawood (Sarah Lancashire), wheezing hard from the chase, tried to talk him away from the edge but hadn’t done the relevant training. Wadsworth had, however, with a 100 percent success rate to prove it. So she asked him what she ought to be saying, and he told her.

Through the snowy wastes we crunched. The winter scenery was overwhelmingly beautiful and almost devoid of any human habitation: gorgeous mountains in the distance, the black waters of the fjords gleaming, the winter sun shining through the pale blue sky. And lo, here was Andrew Graham-Dixon, in woollen hat and furred windbreaker, to introduce us to centuries of Norwegian art.

Halfway through its 10-week run, The People v OJ Simpson: American Crime Story appears to be running in real time as it slowly, painstakingly tells the story of how one of the US's biggest sports stars was accused of the murders of his ex-wife Nicole Brown and her friend Ronald Goldman in 1994. But moving at what is – by modern television drama standards, at least – a glacial pace allows the creators to burrow deep into the American psyche and, more pertinently, examine the deep-rooted racism lurking in parts of US society.

A Nordic noir that began in a blazing fish factory was bound to have lots of red herrings. Trapped, however, did not cheat and eventually revealed not only who set the fire but who was the father of Maggi, the ginger cutie waiting ever so patiently for his gift of a red fire engine. Of course, having learned what we’d learned, he no longer wanted it when Andri (Ólafur Darri Ólafsson), our cop hero, turned up on his doorstep with the toy in his hand. Playtime was over.

Virtuoso Violinists was an hour of unalloyed informative pleasure that toured televised highlights of great violinists playing great music. Its painless excursion into the western classical canon reminded us why the BBC is the NHS of culture, and we delighted here in a guide who proved as accomplished a presenter as she is a performer of genius.

For anyone living in the UK at the time, the Dunblane massacre on 13 March 1996 was an event so seared into their minds that they can remember exactly where they were when the shocking news came through.

Murder is entertainment, which is why crime and the legal process are on television every night. But where drama and documentary focus on criminals and the police who catch them – and the barristers who cross-examine them in court – vanishingly little attention is paid to the worker bees of the legal process. That's partly because the Crown Prosecution Service is a shy organisation. The Prosecutors: Real Crime and Punishment is the first time cameras have been allowed to watch the CPS at work.