And so back to the windswept landscapes of the Shetland archipelago, where stoical DI Jimmy Perez is still keeping the bad guys at bay while continuing to cope with life as an ageing widower. You do wonder, though, how he sustains his commitment to the job in a territory offering such a restricted career ladder.

The end of series five of Endeavour found PC George Fancy shot dead, Cowley police station closed and the old crew dispersed. With Led Zeppelin on the soundtrack (it’s 1969), the sixth series opened minus WPC Trewlove, but with Fred Thursday demoted and shunted off to Castle Gate police station.

Even the most ardent Bowie fan might dismissively sum up their idol's pre-fame years with just these three words: The Laughing Gnome.

Picture this. You’re sailing in the Timor Sea with family and friends on your luxurious yacht, hoiking the occasional plump fish out of the ocean to provide a ready meal washed down with Aussie plonk, when you suddenly chance across a decrepit, broken-down fishing boat crammed with mostly Iraqi refugees. What do you do?

Wolfgang Petersen’s film Das Boot is now nearly 40 years old, but in this new TV sequel time has moved forward a mere nine months from the original story, into the autumn of 1942. Whether it’s still springtime for Hitler is moot, but the U-boat crews based at La Rochelle are locked in a grim struggle with both the Atlantic and with Allied ships and aircraft.

A picture is worth more than a thousand words, never more so than with the photographs of Don McCullin. The octogenarian photographer’s black-and-white imagery made the Sunday Times colour supplement the talk of international media in the 1970s.

It took the best part of six episodes, but we got there in the end: the reason David Oyelowo accepted the confusingly underwritten part of Inspector Javert in BBC One’s adaptation of Les Misérables was finally revealed.

When British sitcoms head west anything can happen. For every success – The Office had a happy second life with Steve Carell – there are half a dozen others that got lost in translation, including Coupling, Getting On, Gavin and Stacey, The It Crowd and The Vicar of Dibley.

When they were children the interviewees in this film – the last survivors – were taken away in incomprehensible circumstances, on their way to be murdered for who they were, in Germany and places further east.

How does an unassuming 36-year-old with a terrifyingly sensible haircut and a mildly flamboyant taste in jumpers become the political playwright par excellence of his generation?