Nancy Mitford's 1945 literary sensation looks poised to be the TV talking point of the season, assuming the first episode of The Pursuit of Love sustains its utterly infectious energy through two hours still to come.

“You have to be careful you’re not judging the piece,” cautioned a pearl-necklaced Nicholas Daniel, great oboist and winner of the 1980 BBC Young Musician (of the Year, as it then was).

WARNING - CONTAINS SPOILERS

Half the fun of this series of Line of Duty has been the crescendo of conspiracy theories surrounding it, fuelled by the way creator Jed Mercurio has skilfully kept tapping into the LoD mythology built up over the preceding five seasons. Craig Parkinson, aka the evil Dot Cottan from earlier series, has been hosting the Obsessed With… Line of Duty podcast, exploring secrets, theories and myths surrounding the show.

Welcome to Commonworld, in the year 2143. It’s been built above the ruins of the old world, and the opening sequence of Sky One’s new interstellar thriller showed us the crumbling remains of Tower Bridge and St Paul’s Cathedral mouldering beneath glittering futuristic super-scrapers and sweeping skyways.

Alfred Hitchcock’s 1954 thriller Rear Window has spawned its fair share of copycats, including Disturbia and Brian de Palma’s Femme Fatale.

As the finishing line begins to materialise through the haze of fear, suspicion and zany acronyms, the pace of this sixth series of Line of Duty (BBC One) has hotted up appreciably. In earlier episodes, there sometimes seemed to be a lack of intensity, and even the fabled interview scenes didn’t always grip like they used to. Maybe filming under Covid conditions had something to do with it.

It has been a hard coming for this RSC Winter’s Tale. Erica Whyman’s production was cancelled by the virus days before its premiere last spring, with plans to stage it in the autumn frustrated by the second lockdown. This broadcast version, retaining that original cast in full, is the first time that a RSC production has gone first to screen, scheduled as part of the BBC's Lights Up season.

Read our review of the season finale here

Dark family dramas set in unglamorous, unprosperous communities in the north-east of the USA have become a genre unto themselves. One thinks here of the work of writers such as Kenneth Lonergan (Manchester by the Sea) and Dennis Lehane (Mystic River and Gone, Baby, Gone), and maybe Chuck Hogan and The Town for good measure.

As Line of Duty aficionados debate the identity of H and wonder who DCI Joanne Davidson shares her DNA with, this new three-part series from BBC Two investigates the history of real-life corruption in the Metropolitan Police.

What may have happened here is that an intriguing book has been turned into a not so great TV series. Too Close was Natalie Daniels’s well-received first novel, and she has adapted it for this ITV three-parter under her real name of Clara Salaman. She used to play DS Claire Stanton in The Bill 20 years ago.