This latest outing from the astonishingly prolific Jack and Harry Williams (The Missing, Baptiste, The Widow, Strangers etc) gives itself a huge leg-up by exploiting the epic lonely spaces of the Australian Outback.

The title might provoke a quick double-take. Wasn’t A Very British Scandal that series about Jeremy Thorpe and Norman Scott, starring Hugh Grant and Ben Whishaw?

Would you be willing to play the guinea pig in a designer-superhome created by a deranged architect? That is one question posed by this four-part drama (adapted by JP Delaney from his own novel), a kind of haunted house mystery underpinned by the damaged psychological states of its protagonists.

I sympathised with the prosecuting barrister when she put it to the court that the accused, a man called Hero (Samuel Adewunmi), was “using his closing speech to construct a work of fiction”.

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.

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.

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.

Baptiste (BBC One) has two powerful weapons in its armoury, in the shape of its stars – Tchéky Karyo as the titular French ‘tec, and Fiona Shaw as the central character in this second series. Both of them are astonishingly persuasive at conveying unfathomable depths of pain and loss, and it looks like they’ll have plenty of opportunities to prove it across these six episodes.

Jimmy McGovern’s new three-part drama about prison life is about as far as you could travel from Ronnie Barker’s Seventies sitcom Porridge, even if they are both on the same TV channel.

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.