There's a Prime Time Investigates that looks into county councillors' expense claims, US drama Manifest returns for a third season, William Shatner Meets Ancient Aliens, and there’s the final episode of The Nest . . .

Pick of the Day

Prime Time, 9.35pm, RTÉ One

Here we go. Again.

The RTÉ Investigates team reveals how a lack of oversight of county councillors' expense claims is leading to significant overclaiming with the taxpayer left to pick up the tab.

If you feel like getting angry tonight, this is probably an ideal viewing choice.

Don’t Miss

Hemingway, 9.00pm, BBC Four

Legendary documentary maker Ken Burns has come up with another cracker here.

The third part of this documentary series about the American writer reveals how, having achieved a level of fame rarely seen in the literary world, Hemingway settled in Key West with Pauline Pfeiffer.

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He now spent his time seeking out new conquests in the natural world - marlin fishing in the Gulf Stream and hunting in Africa.

With readings by Meryl Streep, Patricia Clarkson, Keri Russell, Joe Morton and Josh Lucas.

Bake Off: The Professionals, 8.00pm, Channel 4

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Tom Allen and Liam Charles are once again on hosting duties as the contest continues.

The patisserie chefs face the quarter-final, and for their first challenge they serve up 24 Black Forest gateaux and 24 mini roulades.

For the showpiece, the teams go back to the 1970s as they construct a disco-inspired showpiece, using a combination of sugar and chocolate, and incorporating desserts.

New or Returning Shows

Manifest, 9.00pm, Sky One

Streaming on NOW TV

This pretty daft show returns for a third (and last) season promising action, drama, shocking revelations and the answer to the mystery of what happened to the passengers of Flight 828.

Over a year has passed since the miraculous homecoming of Flight 828 and the discovery of others who have mysteriously returned.

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While the Stone family endeavours to keep their friends safe and make their enemies believe the unbelievable, new challenges will test their trust of the callings and each other.

In the season premiere, Ben heads on an international mission with Vance to seek a clue in hopes of finally unlocking the mystery of Flight 828.

William Shatner Meets Ancient Aliens, 9.00pm, Sky History

Streaming on NOW TV

Part of Summer of Secrets on Sky History, host William Shatner joins the Ancient Aliens team on a special two-hour interrogation that brings thought-provoking questions to the leading experts of the show.

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Ancient Astronaut theorists Giorgio Tsoukalos, Erich von Daniken, David Childress, William Henry and Linda Moulton Howe are joined by former British Ministry of Defence investigator Nick Pope, rocket scientist Dr Travis Taylor, theoretical physicist Dr Michio Kaku and religious history experts Rabbi Ariel Bar Tzadok and Reverend Michael Carter.

With William Shatner, they unravel groundbreaking archaeological finds, new understandings of the cosmos and the profound possibility that we are not alone in the universe.

Cooking with the Stars, 9.00pm, Virgin Media Two

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This brand-new series sees eight celebrities, each paired with a professional chef who will mentor, teach and take them from amateur to restaurant-level chefs.

In the first episode the first four celebrities - Johnny Vegas, McFly's Harry Judd, Shirley Ballas and Naughty Boy - step up to the plate and battle it out in the kitchen. Who has what it takes to shine?

New to Stream

Ridley Jones, Netflix

Curious kid Ridley and her friends protect the Museum of Natural History’s treasures and keep its magical secret safe: everything comes alive at night.

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Ending Tonight

The Nest, 10.05pm, RTÉ One

It’s the final part of this fine drama starring Sophie Rundle and Martin Compston as Emily and Dan, a married couple unable to conceive, with Mirren Mack as 18-year-old Kaya, who offers to be their surrogate mother.

Alone and betrayed by all those closest to her, Kaya becomes increasingly reliant on Siobhan. But can the pair ever free themselves from the history they share?

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Devastated that the teenager has revoked their rights to visit the baby, Emily regrets how bitter their relationship has become, but Dan launches an aggressive legal battle against Kaya the surrogate mother.

Ros na Rún 25 bliain, 8.30pm, TG4

Tadhg O Direáin has been the local publican, undertaker and a callous businessman in Ros na Rún from the onset.

He never worries that his cruel and often insulting comments drive his customers away! After all, this is the only pub in the village.

Tadhg loves to meddle in others people's business. In this episode, dedicated to the man we love to hate, it's the chance for other characters to meddle in his.

They speak openly and candidly about his relationship with his family, his love life, his dodgy business dealings and possibly his secrets that he hides.

City on a Hill, 9.00pm, Sky Atlantic

Streaming on NOW TV

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As Boston mourns another loss, Decourcy pursues justice in and out of the courtroom.

Despite his manoeuvring, Jackie discovers that he can’t escape his past, while Jenny decides to finally confront hers.

Cathy says goodbye to the root of her struggles. Siobhan sets her sights on a new dream.

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