Murder in Paradise explores the murder of Michaela McAreavey, MasterChef returns for a 19th season, Belfast cop drama Blue Lights continues, and The Catch comes to a conclusion . . .
Pick of the Day
Murder in Paradise, 10.30pm, BBC One
Darragh MacIntyre and Allison Morris explore the case of Michaela McAreavey, who was found strangled in the bathtub of her honeymoon suite in Mauritius in 2011.
Michaela's widower, John McAreavey, recounts how he discovered his wife's body, and his subsequent ordeal as he became the first suspect in the case.
And there's the Detective Inspector who led the investigation explains how police arrested three hotel workers within 24 hours, with evidence pointing to a robbery gone wrong.
Don’t Miss
Blue Lights, 9.00pm, BBC One
The gritty cop drama set in Belfast continues.
Grace Ellis investigates the punishment shooting of a young McIntyre drug runner, and her old skills as a social worker help get the evidence she needs to bring charges against the gang.
But she is stalled by a senior colleague, who makes it clear that she should back off. When Gordy pulls away from Angela, she becomes desperate for help.
Home Grown, 8.30pm, RTÉ One
Streaming on RTÉ Player
Kitty Scully visits the Rare and Special Plant Fair at Fota House and Gardens in Cork, to meet some of the nurserymen and women who breed these unusual plants.
Colm O'Driscoll heads to a fruit farm in Enniscorthy, Co Wexford, where Jimmy Kearns has found ways to extend what used to be a 6-to-8-week season to as much as 9 months.
Mamma Mia! Here We Go Again, 9.30pm, RTÉ One
Fluffy Bank Holiday viewing which should send you to bed with a smile on your face and a tune or two in your head.
If by some chance you’re unaware, it’s an Abba-themed musical sequel, starring Amanda Seyfried, Lily James, Pierce Brosnan, Cher and Andy Garcia.
It's five years since Sophie invited her three possible dads to her wedding, and now most of her family are reunited as she prepares for the grand reopening of the Hotel Bella Donna.
Along the way, she learns more about her mother's past.
New or Returning Shows
MasterChef, 8.00pm, BBC One
John Torode and Gregg Wallace (below) present the audition round of this year's cookery competition, now in its 19th season.
The nine contestants must each prepare a Family Favourite dish, which John and Gregg will sample in a special tasting room - with no clue which cook prepared which meal.
After they have chosen their three favourites to fast-track to the next round, the remaining contestants will be set an invention test.
Ross Kemp: Deep Sea Treasure Hunter, 9.00pm, Sky History
Streaming on NOW
Back for a second season, actor-turned-action man Ross Kemp (below) travels further around the world to dive even deeper on shipwrecks of major historical importance.
The new run follows Ross as he explores the remnants of some of the most significant moments in British history, including the site of the Mary Rose, one of the most famous shipwrecks ever discovered, to mark the 40th anniversary of the ship being raised.
Ross and his team also dive on the wreckage of D-Day abandoned in the English Channel, wrecks off the Cornish coast, and as far afield as the Red Sea in search of Britain’s Imperial past.
On his journey, Ross is once again joined by marine archaeologist Mallory Haas and legendary dive master Neil Brock along with tank expert and safety diver Mark Culwick joining the team with a host of new historians and maritime experts.
The Sky at Night, 10.00pm, BBC Four
The long-running monthly astrology series returns.
Dr Maggie Aderin-Pocock presents the latest science in the hunt for exterrestrial life, visiting Professor Mark Sephton at Imperial College London.
He’s one of the scientists leading the Perseverance Rover mission to Mars.
Chris Lintott hears about the launch of a major European Space Agency mission to explore habitability on Jupiter's icy moons.
Colin From Accounts, 10.30pm, RTÉ 2
Ashley is a medical student who has just been dumped. Gordon runs a micro-brewery and has always been unlucky in love. The two are thrust together when, distracted by Ashley's actions, Gordon hits a stray dog with his car.
Centred on Ashley and Gordon, two single-ish, complex humans who are brought together by a car accident and an injured dog. Flawed, funny people choosing each other and being brave enough to show their true self, scars and all, as they navigate life together.
Ending Today
The Catch, 9.00pm, Virgin Media One
As the psychological thriller starring Jason Watkins and Cathy Belton concludes, Ed comes face to face with the truth, and he knows he must confront his nemesis alone in order to protect his family.
As he makes his way to Kerrick Point, the stage is set for a climactic confrontation as secrets are exposed and confessions laid bare.
Tempting Fortune: The Final, 9.00pm, Channel 4
It's the final leg of the journey, and the group must tackle a chilling night trek before reaching the finish line.
A bombshell rule change throws everything up in the air. With the ultimate temptation standing between them and the end of their expedition, will they risk everything?
