Kaley Cuoco’s back as The Flight Attendant, new dramedy Big Boys comes highly recommended, there’s Ardal O'Hanlon: Tomb Raider, and Sue Perkins is the focus of the returning Who Do You Think You Are?
Pick of the Day
The Flight Attendant, 9.00pm, Sky Max
Streaming on NOW
The superb first season of this dramedy showed that Kaley Cuoco is much more than Penny from The Big Bang Theory.
She’s also been voicing Harley Quinn in the animated Batman spin-off, but she was fantastic as Cassie Bowden, the eponymous flight attendant.
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As the show resumes with this double episode, Cassie is now almost a year sober, and has started over in Los Angeles with her supportive new boyfriend, Marco.
All is well until her side gig moonlighting as a CIA asset finds Cassie entangled in an international murder mystery again.
After revealing her secret side gig to Annie and Max, Cassie sets out to find the woman who's been impersonating her and zeros in on enigmatic new flight attendant Grace.
Don’t Miss
The RKO Story, 8.00pm, BBC Four
In the latest episode of this superb series, Ed Asner (above) examines the paranoia created by the House Committee on Un-American Activities and Edward Dmytryk and Richard Fleischer explain film noir.
Plus, there’s footage of Robert Mitchum making his first screen appearance, and a look at Val Newton's films Zombies and Cat People.
Suspicion, 9.00pm, BBC Four
Alfred Hitchcock's thriller, with Cary Grant, Joan Fontaine, Nigel Bruce and Cedric Hardwicke is the latest Thursday night Tinseltown treat.
A woman swept off her feet by the attentions of a charming rogue agrees to marry him, despite the warnings of friends.
However, his increasingly odd behaviour arouses her suspicions, and when his business partner dies in mysterious circumstances, she becomes convinced he has murder in mind.
Taskmaster, 9.00pm, Channel 4
There's a food and drink theme running through this instalment as our own Ardal O'Hanlon indulges in a plant-based snack.
Elsewhere, liquids are poured down a giant tube on Sophie Duker's head, Chris Ramsey refuses to consume dried spaghetti and Bridget Christie browns a bun
Judi Love, meanwhile, impresses Taskmaster Greg Davies with her tales of celebrity encounters.
New or Returning Shows
Big Boys, 10.00pm, Channel 4
Dylan Llewellyn, Jon Ponting and Katy Wix star in this hugely promising dramedy.
It’s about two mismatched young men from opposite ends of the, eh, 'spectrum of masculinity’ who become besties when they are thrown together at university.
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In the opening episode, Jack is a sheltered, closeted boy 19-year-old from Watford, trying to get over his dad's death and work out what he wants from life.
Arriving at Brent University, he is thrown together with typical lad Danny, a few years older than the other freshers and confronting the demons of mental health.
Then at 10.30pm Jack and Danny try to find their individual crowds during freshers' week while being banned from partying in halls.
But a night out with fashion student Yemi leads to them both getting far more than they bargained for.
Ardal O'Hanlon: Tomb Raider, 10.15pm, RTÉ One
Ardal (below) pops up for the second time tonight. Here he explores some of the most important archaeological finds in Ireland's history, revealing that many have been used as important tools for nation-building on both sides of the border.
Speaking to world-renowned experts, he unravels a forgotten time period, when a team of Americans from Harvard University, a Nazi archaeologist from Austria, and a Welsh geography professor dug up ancient sites across the island.
Their pioneering work answered questions about the Celts, and what it means to be Irish.
Who Do You Think You Are? 9.00pm, BBC One
Sue Perkins (above) discovers more about her orphaned grandfather and a great grandfather interned as an ‘enemy alien’ during the First World War.
When the comedian and broadcaster delves into the German branch of her family who were living in Eastern Europe through the Second World War, she uncovers a harrowing tale of refugees fleeing back and forth across borders between Nazi and Soviet control.
New to Stream
My Little Pony: Make Your Mark, Netflix
Here's one for the many MLP fans out there.
When Zipp realizes that the power of the crystals are fading, she goes on a mission to figure out why.
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Ending Today
Special Forces - Ultimate Hell Week, 9.30pm, RTÉ2
Of the 28 recruits who started the course, just seven candidates now remain.
So far the remaining recruits have overcome each and every Hell Week challenge but this final 24 hours will be the most physically and psychologically demanding experience of their lives.
Get through these final tests and they will have passed the Ultimate Hell Week course. It's all or nothing now.
Art That Made Us, 9.00pm, BBC Two
This series concludes with a look at more recent times.
The generation of artists who recorded the shocks of global war gave way in the 1950s and 1960s to an explosion of new voices from across the British Isles, reinventing the arts and creating a richer, more diverse culture.
Young artists rebelled against the old establishment, kicking against the confines of class, sex, nation and race.
