TV tonight: Stephen Graham is a reformed neo-Nazi in this explosive drama

The Walk-In

9pm, ITV

From Bafta-winning screenwriter Jeff Pope, this five-part, fact-based series is another painfully close-to-the-bone dramatisation examining the state of modern Britain. Set in 2016, the brilliant Stephen Graham is reformed neo-Nazi Matthew Collins, who is now an activist for the advocacy group Hope Not Hate. Far-right tensions are palpable thanks to the imminent Brexit referendum and the rise in hate speech on social media. The murder of the Labour MP Jo Cox by a white supremacist brings things to a head by the end of the first episode. In order to prevent a second MP from being killed, Matthew must go undercover to infiltrate the group threatening to carry out the hit. Hollie Richardson

Inside Man

9pm, BBC One

Did Edgar leave a confession in his suicide note? Can Janice smart-talk her way out of Harry’s basement? And why is Grieff suddenly bargaining for his life by admitting where he buried his wife’s head? Steven Moffat’s tricksy drama continues, with Tuesday’s finale giving the answers. HR

Trouble at Topshop

9pm, BBC Two

In the second half of a competent documentary, it’s one thing after another for the clothes store that once ruled Oxford Circus. With the financial crash and the rise of fast online fashion already making life difficult, scandals around owner Philip Green’s business practices make the roof fall in. He does not naturally attract sympathy. Jack Seale

House of the Dragon

9pm, Sky Atlantic

Things are really firing up after that time jump. Tonight, somebody has stolen super-dragon Vhagar – last seen cremating her dying rider, Laena. And after Queen Alicent’s scheming collaborator, Larys, ordered his own father to be burned to a crisp, there’s a vacancy for the King’s Hand – welcome back, Ser Otto. Amid the drama, expect a lot of dagger action. HR

The Big Blow Out

10pm, E4

AJ Odudu hosts this new contest to find the UK’s best hair stylist. Every week, judges Sam McKnight and Lisa Farrall will be putting hairdressers through their paces, until only one makes the cut. Tonight: the masterpiece challenge, with the theme of This Is Me. Who’s getting the chop? Should be plenty of highlights. Ali Catterall

Ladhood

10pm, BBC Three

There aren’t many shows that can pull off a trippy musical interlude set to Take That’s Never Forget, complete with dancing devils wearing Nike trackies … In the second part of this concluding double bill, it’s A-level results day, but the boys are more preoccupied with solving the most 00s of crimes: who smashed their TV with a Nintendo Wii remote? Katie Rosseinsky