What did the Romans do for us? On the evidence of new drama Britannia, they pillaged, murdered and tortured, but also found themselves mesmerised by the psychedelic Druid magic that hovered over our ancient land like fairy dust.

For the third and allegedly final time, we hasten back to the Kent coast for another outbreak of cross-Channel crime.

Sky Atlantic’s German import is an intoxicating mix of intrigue and betrayal, set in the excessive days of the Weimar Republic. Gripping stories and extravagant production meet in the opening two episodes of this brilliantly promising Euro-noir.

There’s a moment in The Deuce (Sky Atlantic) – a rare quiet one – where a working girl called Darlene is visiting a kindly old gent on her books. He has A Tale of Two Cities on his TV, the old black and white version with Dirk Bogarde as Sydney Carton preparing to do a far far better thing. As the final shot of the guillotine pulls back over the Paris rooftops, Darlene (played by Dominique Fishback) can’t believe what she’s just seen.

Sometimes you can find yourself hankering after those old-fashioned TV dramas where you got a self-contained story every week, so you can drop in on it at any time and still keep up with what’s going on. With Tin Star, on the other hand, you need to stick with it for at least four episodes before the scope of the story begins to reveal itself and it starts to exert a painful grip.

If nothing else, Game of Thrones has surely been the greatest boon to the British acting profession since they invented tights and greasepaint. Part of the fun is trying to think of somebody who hasn’t been in it yet.

W Somerset Maugham, who knew a thing or two about the dark side, summed up the Riviera as “a sunny place for shady people”. On the evidence of this first episode, Riviera is a funny place for shitty people.

So here’s the thing: a heavily pregnant woman is hanging by her ankles above a raging torrent. Two teens, one with a broken arm, are stuck down a well. And 15 miners, deep below ground, take refuge from a fire in an emergency chamber, unaware it has been sabotaged by the serial killer among them, who then, using “a gadget”, proceeds to switch off the mine’s pumps so they will all slowly drown.

Devised and written by John Ridley, the Oscar-winning writer of 12 Years a Slave, Guerrilla (Sky Atlantic) takes us back to London, 1971. The story is set among a group of black activists agitating against racism and police brutality, and the city is portrayed as a shabby, smouldering dystopia about to erupt into apocalyptic violence.

It happened in Monterey, but we’re not entirely sure what yet. Adapted from the novel by Australian writer Liane Moriarty, with the action transplanted from a small town in Oz to the splendid oceanside scenery of Monterey, California, Big Little Lies oozes Hollywood pedigree.