Jed Mercurio’s tangly police corruption thriller Line of Duty has become one of the jewels in the BBC’s drama crown, and this sixth (and possibly last) series has finally arrived on BBC One after a steadily growing crescendo of pre-publicity. Can it live up to the hype?

Readers of John Marrs’s 2017 novel The One should probably look away now, since Netflix’s dramatisation of the story bears scant resemblance to the book.

There comes a time when every successful formula can do with an overhaul, and that particular bell may be tolling for Unforgotten (ITV).

Joerg and Anna Winger’s gripping drama of East Germany, a loose portrait set over the final decade of that country’s existence, has reached its culmination, and this first episode of Deutschland 89 landed us right in the unpredictable maelstrom of history.

Admittedly, Antarctic explorer Captain Scott was at the other end of the earth from the protagonists of The Terror (BBC Two), but they would surely have concurred with his anguished observation: “Great God! This is an awful place.” Based on Dan Simmons’s novel, The Terror is a fictionalised account of the 1845 attempt by Sir John Franklin to find the Northwest Passage between the Atlantic and the Pacific via the Arctic Ocean.

Nice to find Bryan Cranston taking the lead in a TV series again (this is his first since Breaking Bad ended in 2013), and the role of New Orleans judge Michael Desiato fits him like a well-tailored suit.

Belfast-based thriller Bloodlands comes from the pen of first-time TV writer Chris Brandon, though he may find some of his thunder being stolen by the show’s producer, Line of Duty supremo Jed Mercurio. Line of Duty is filmed in Belfast too, though it doesn’t advertise the fact on screen. Bloodlands, on the other hand, is steeped in its northern Irish locations both rural and urban, as it unravels a dark and twisty tale of the legacy of the Troubles and how the past has an ugly habit of coming back to poison the present.

Based on a book by Roberto Saviano, author of the Neapolitan gang saga Gomorrah, ZeroZeroZero (Sky Atlantic) is an account of the international drugs trade and the way its tentacles wrap themselves around the entrails of societies at all levels.

Sad to report, this fourth series of Call My Agent! (Netflix) will be the final outing for this caustically addictive saga of actors and their agents. The show’s unique trademark has been its success in attracting an impressive roster of A-list French actors and getting them to behave in outlandish and ridiculous ways, but maybe they’re just running out of suitably recognisable names.

The oeuvre of M Night Shyamalan has tended to veer between unsettling creepiness and sometimes hilarious misfires, but, working as Executive Producer with screenwriter Tony Basgallop, he’s hit the spot with this unnerving series for Apple TV +. Just back for its second season, Servant homes in on the fraught and freaky lives of Sean and Dorothy Turner.