How edgy is the new Rebus (BBC Scotland, Friday, BBC1, Saturday)? Well, besides scenes of sex, drugs and violence, there is a gag about hummus. That would never have been served up in Taggart. But that’s Edinburgh for you, all fur coat and nae square sausage.

There has been some head-scratching over the new Rebus. He is younger than in previous television versions, and in the books, but it is not a prequel. In this Rebus, Edinburgh has foodbanks, smartphones, suspects who say “no comment” and, yes, hummus.

Joining Rebus in 2024 are regular characters from the books including “Big Ger” Cafferty, a gangster, DC Siobhan Clarke, his work partner, and standards inspector Malcolm Fox.

Rest assured, at no point does a Tardis or a DeLorean feature. As in the reboot of Sherlock with Benedict Cumberbatch as Holmes and Martin Freeman as Watson, the characters, with all their traits, are transferred to the present day.

The shift is done so smoothly by writer Gregory Burke you barely give it a second thought. We’re here in 2024, it’s fine, get used to it.

I like this new model Rebus, as played by Richard Rankin. His Rebus is every big brother that ever slagged you affectionately, but he can also be a rotten so-and-so. He prides himself on his loyalty, but he is not to be trusted. A family guy at war with his brother, a good dad who sets a bad example, he’s a can’t look away mix of fallen angel and fledgling devil.

READ MORE Ian Rankin on the rebirth of Rebus

READ MORE A match made in paradise

For more reviews please subscribe

The action begins with a flashback to a year earlier, when Rebus and a colleague were run off the road by Cafferty (Stuart Bowman). All survived, but questions linger.

Also facing questions, mostly about his future, is Rebus’s brother Michael (Brian Ferguson), out of the Army and living in the rundown, dealer-infested “Keir Hardie Gardens” with his family. The humour runs bleaker and deeper in Burke’s Rebus. This being post-indy ref Scotland, the politics has a sharper edge too.

Between them the brothers have troubles piling up, and limited ways of dealing with them that don’t involve violence. There is a fair chance there will be blood, and maybe more hummus. DC Clarke (Lucie Shorthouse, a perfect fit, like the rest of the cast) looks the type to order sourdough and hummus, or “hard bread and effing chickpeas” as Cafferty calls it.

If the rest of the series is as tasty as the opener, Rankin and Burke have a hit on their hands.

The Jennings v Alzheimer’s (BBC2, Monday) was the most moving watch of the week, all the more so for being told in a straightforward documentary style.

Doctors had thought early-onset Alzheimer’s was not passed down through the family. But Carol Jennings, a mother of two, knew that was not the case. Her father had it, as did several of his relatives. Through studying the Jennings, the gene causing the problem was found.

It was a game-changing, world-beating development and it all started with Carol responding to a scientist’s appeal for information.

We met the Carol of then, a can-do bundle of energy and determination, and we met the Carol of today, unable to speak and in need of 24/7 care from her husband and nursing staff.

The children were adults now and, like Carol, they had a 50:50 chance of having the gene. But did they want to know? Would you?

The film, like the family, dealt with such questions calmly, openly, and with a great deal of dignity. There were no easy answers, as Carol knew. How could there be?

Later in the film we saw Carol on a rare outing to a centre for people with dementia. A suite was being named after her in recognition of her efforts down the years. “I’m just in awe of Carol,” said one observer, “absolutely in awe”. So say all of us.

Given the success of The Traitors it was only a matter of time before others in TV land came along to pay tribute/jump on the bandwagon.

The Fortune Hotel (ITV1, Monday) is set in the Caribbean rather than Scotland (was it something we said?), the host is Stephen Mangan in place of Claudia Winkleman and there is a lot of faffing about with briefcases. Otherwise, it’s the same mix of gameshow and cod psychology with a cash prize of £250,000 for the winners.

One difference is that the contestants are in pairs - mother and son, married couples, pals - so the fighting, when it inevitably begins, is funnier. Mangan, more used to the civilised environs of Portrait Artist of the Year, looked stunned. No wonder. But the madness grew on him, as it did me, and you had to admire the standard of strategic thinking going on.

The Piano (Channel 4, Sunday) found its stride at last in Waverley station, where the amateur musicians were such a winning lot the judges changed the rules and sent two through to the final. Must be something in the hummus.