“Drug companies are supposed to be honest,” says a lady from the Department of Justice, explaining why the US Food and Drug Administration had been treating the pharmaceutical industry with a light, indeed barely detectable, regulatory touch.

This latest offering from the ubiquitous World Productions (creators of Line of Duty, the farcical but strangely popular Vigil, Bodyguard etc etc) is a whodunnit, a howdunnit and a whydunnit, as it explores the mysterious disappearance and death of university student Hannah Ellis.

Treading in the footsteps of Roy Marsden and Martin Shaw, Bertie Carvel is a making a decent (albeit soporific) stab at embodying P D James’s introspective detective Adam Dalgliesh, though you have to wonder if he’s getting the help he needs from Channel 5.

It’s difficult to know how seriously to take Temple, Sky Max’s outlandish medical thriller about surgeon Dr Daniel Milton and his gothicky secret clinic, hidden under Temple tube station in London.

The population of the Shetland archipelago is only about 23,000 (similar to Broadstairs or Amersham), though judging by the adventures of DI Jimmy Perez, an extraordinarily large percentage of them harbour dark secrets or murderous tendencies.

Conceived on a global scale to depict the enormity of an alien menace from outer space, Apple's new series Invasion has grand ambitions, but crash-lands like a pile of space junk. After a few hours of this, waiting for something to happen, you’ll be yearning for a trawl through Netflix or Walter Presents.

Channel 5’ s decision to remake James Herriot’s much-loved Yorkshire vet stories was an inspired one, and this second series has effortlessly carried on the mood of gentle observation, nostalgia and slapstick comedy amid scintillating Yorkshire Dales scenery. A teeming cast of dogs, cats, horses, cows and chickens is permanently on call to provide fuel for the adventures of Herriot and the Farnon veterinary dynasty.

It’s perhaps unfortunate that The North Water arrives on BBC Two only a few months after The Terror, since it’s impossible to avoid the parallels between them. They’re set only a few years apart (1859 for The North Water, 1845 for The Terror), both involve doomed voyages into Arctic waters, and each of them gets darker and bloodier as it depicts man’s inhumanity to man (and not just man) and the encroaching horror of a heart of darkness.

It seems Covid-19 may not be the only plague threatening mankind. The virus is nowhere to be seen in Netflix’s grippingly twisty mystery Clickbait, but it’s the use and abuse of social media that drives its tale of malice, murder and deception.

Submarines have delivered some memorable on-screen performances, from Run Silent, Run Deep to The Hunt for Red October. On the other hand, we must not overlook the treasurably idiotic BBC series The Deep, which featured a submarine with a “moon pool” in it (this was a big vent permanently open to the ocean). Handy for reaching the sea-bed in a hurry perhaps, but not helpful for getting back up again.