![Heidi Blake reports in Once Upon a Time in Londongrad](https://media.guim.co.uk/9dc803bfd4a71bb112dfef4c4262f733b5378d6a/0_13_1289_773/1000.jpg)
Once Upon a Time in Londongrad
9pm, Sky Documentaries
“I’m often asked, as an investigative journalist, whether I get scared doing this kind of work,” says reporter Heidi Blake, who talks us through this six-parter. “My honest answer has always been no – but I have to say that changed working on this story.” Set across Vladimir Putin’s two decades in power, it charts the death of multimillionaire property tycoon Scot Young – who was entangled with Russian oligarchs, 10 Downing Street and Washington DC – after his ex-wife said she didn’t believe it was suicide. Hollie Richardson
Marcus Wareing’s Tales from a Kitchen Garden
7pm, BBC Two
The last episode in this warm hug of a series, which follows the chef’s slower pace of life in the countryside, sees him take a trip to Kent to plant a nut orchard on a farm. He then gets a lesson in perfecting compost. HR
Bake Off: The Professionals
8pm, Channel 4
![Liam Charles and Stacey Solomon in Bake Off: The Professionals.](https://media.guim.co.uk/5454987179924c24558d83dc4d2fb21da74224b6/0_0_4320_2880/1000.jpg)
A mountain of sport-themed choux buns; 24-layer crepe cakes; savoury slices with a twist … it can only be patisserie week. Liam Charles and Stacey Solomon are on hand to calm the seven remaining paired-up professionals, who will face the judgment of Benoit Blin and Cherish Finden. HR
Lucy Worsley Investigates: The Black Death
9pm, BBC Two
In an episode that doesn’t feel a million miles away from our recent reality, the historian takes her magnifying glass to the first wave of the Black Death in 1348 – a pandemic that wiped out a third of the British population over just a few years. She starts by testing the DNA of skeletons of plague victims. HR
24 Hours in A&E
9pm, Channel 4
A look back at some of St George’s hospital’s most memorable admissions: from the personal trainer whose leg was broken after being kicked by a horse to a heart attack survivor whose nose wouldn’t stop bleeding. HR
State of the Union
10pm, BBC Two
![Disintegrating … Brendan Gleeson and Patricia Clarkson (left and centre) in State of the Union.](https://media.guim.co.uk/34952c333439fb2a0f4dbae669ee48dcf2a8db7d/0_0_4284_2856/1000.jpg)
Stephen Frears’ and Nick Hornby’s thoughtful series continues to itemise the disintegrating marriage of Ellen and Scott (Patricia Clarkson and Brendan Gleeson). Much of it feels pretty universal – imperfections are heightened but a connection remains. Tonight, Scott learns surprising new information about Ellen that highlights their loss of true intimacy. Phil Harrison