Dancing With The Stars 6.30PM, RTÉ ONE Nicky Byrne and Amanda Byram host the third episode, and this week the dancers have an extra reason to feel nervous because someone is going to be voted out.
Countryfile 6.30PM, BBC1 The team are on the ancient Jurassic Coast in Dorset, where Matt Baker tries his hand at a popular local pastime: fossil-hunting.
Still Open All Hours 7.30PM, BBC1 In the funniest episode of the series, Granville is thrown into a panic by the news that there are forged banknotes in circulation.
Endeavour 8PM, UTV While protecting an informant as he undergoes treatment in Cowley Hospital, Endeavour is drawn into the mystery of the ward. Rumours are circulating among the patients about the curse of bed ten.
Walking The Americas 8PM, CH4 The latest leg of Levison Wood’s epic trip takes him from the stunning landscapes and beautiful colonial cities of Nicaragua into the natural paradise of Costa Rica — taking in an active volcano along the way.
Apple Tree Yard 9PM, BBC1 Get ready for a TV show rarity – a female over 30 lead character as a fully functioning human who can still fall in love, make mistakes and have (whisper it) intimate relations. Based on the book by Louise Doughty and starring Emily Watson.
Homeland 9PM, CH4; EPISODE TWO ON TUESDAY, 9.30PM, RTÉ2 The spy thriller feels more relevant than ever, particularly as this series follows a US presidential election. On Tuesday, Carrie and Reda fight for their client while Quinn fights against his new life.
Striking Out 9.30PM, RTÉ ONE It’s the last in the series, but Tara isn’t winding down – instead she’s taking on two demanding cases. One of these is a father who faces losing his son to state care.
Great American Railroad Journeys 6.30PM, BBC2 Michael Portillo ditches his Bradshaw’s in favour of Appleton’s General Guide To The United States And Canada.
Silent Witness 9PM, BBC1 In this week’s two-part investigation, father and son Bill and Frankie McAteer are killed in a horrific car crash on their way home from work. But when Nikki and Jack arrive at the scene, they discover this was no accident, and a gripping tale of bloody revenge unfolds…
Horizon: Hair Care Secrets 9PM, BBC2 This fascinating investigation tells you all you ever wanted to know about hair but were too afraid to ask – including whether it’s worth buying expensive shampoos.
The Halcyon 9PM, UTV While working at the War Office, Toby hears that his brother Freddie’s squadron has gone down. Emma is devastated – the man she loves may be dead before she’s even had the chance to tell him how she feels.
Then Comes Marriage? 9.30PM, RTÉ2 Three more couples put their relationships to the test, including Tom and Jess, who have already set a date for their wedding. However, it seems they may have to learn how to put the past behind them.
First Dates Hotel 10PM, CH4 Retired restaurateur Stephen and mature model Belinda quickly get stuck into the wine list during their date in France.
John Connors’s America 10.30PM, RTÉ2 Actor and activist John Connors is fascinated by the parallels between Travellers in Ireland and Native American communities in the US. Tonight he’s in South Dakota to learn about the Lakota language.
Our Dancing Town 7PM, BBC2 Choreographer Steve Elias has no problems persuading the people of Huddersfield to take part in his project – but the numbers of dancers bring their own set of challenges.
Eco Eye 7.30PM, RTÉ ONE Many of us take our water systems for granted, but as the last high-quality waters begin to disappear, that could soon change. Anja Murray looks at our vital waterways.
Martin Clunes: Islands Of Australia 8PM, UTV Our genial host concludes his epic odyssey by visiting Mundoo Island and Phillip Island, before finishing off on Maria Island to see one of Australia’s most iconic creatures: the Tasmanian devil.
How To Lose Weight Well 8PM, CH4 It’s the mono meal diet, the Dukan diet, the abs diet, the South Beach diet, the DNA diet and the apple-pear regime. But still no one is on the eat-less-and-do-more-exercise diet.
Ear To The Ground 8.30PM, RTÉ ONE Co Roscommon’s Dan Moran, who is approaching his 98th birthday, has trained several hundred sheepdogs during his career. Ella McSweeney puts his methods to the ultimate test as she pits his border collie against a drone in a herding contest.
Sugar Free Farm 8PM, TV3; EPISODE THREE AT 9PM, UTV Seven celebrities are confronted with their unhealthy eating habits, and submit to a radical diet. At 9pm, it’s the halfway mark on the farm, and after eight days, the celebrities no longer have carvings.
24 Hours In A&E 9PM, CH4 Aaron is rushed to St George’s Hospital after overturning his car onto metal railings during a high-speed collision, leaving his twin brother, Alvin, to worry about his future.
Blue Bloods 10.15PM, RTÉ2 Being a cop is a dangerous job, even when you’re not at work – this week, Lieutenant Gormley is badly beaten outside his home.
Grey’s Anatomy 10.30PM, RTÉ2 The medics receive a blast from the past as a familiar face returns to Grey Sloan. Catherine turns up the pressure, forcing Bailey to make a decision about Alex, while Amelia’s day goes from bad to worse.
Léirmheas Leabhar 7.30PM, TG4 A new literary panel series presented by Róisín Ní Ghairbhí on books in the Irish language, including newly published works.
Neven’s Irish Food Trails 7.30PM, RTÉ ONE Neven is on a seafood-inspired trail as he takes to the waves with Cork’s Murphy family of suppliers Shellfish De La Mer.
Italy’s Invisible Cities 9PM, BBC1 Alexander Armstrong and Dr Michael Scott conclude their fascinating series by uncovering the secrets of Florence.
Hospital 9PM, BBC2 This week’s episode focuses on brain surgeon Kevin O’Neill, who has to deal with challenging neurological cases.
No Offence 9PM, CH4 The Friday Street team launch an urgent search when a father reports his teenage daughter as missing.
Vikings 9.30PM, RTÉ2 Can anyone in this drama be trusted? It’s looking unlikely this week as Odo seems set to be betrayed, and Ecbert offers his support to Kwenthrith in Mercia.
The Cruise: Sailing The Mediterranean 8.30PM, UTV It’s a big moment for new bridge officer Lauren as she edges closer to taking the helm. First, she has to moor the Royal Princess in an extremely small port.
This Is Jobstown 9PM, TV3 Boxer Linda finds out she is not going back to school – and also has other big news to share with her family. The Firebrand Church holds an outdoor baptism for its members.
Death In Paradise 9PM, BBC1 Saint Marie’s cricket club’s win is overshadowed when club president Jerome Martin is later found shot dead. Will Humphrey be able to catch the killer out?
The Cult Next Door 9PM, BBC2 This extraordinary documentary tells the story of a strange cult that came to light in 2013 when three women, including a then 57-year-old Belfast woman, emerged from a flat in London, after decades in captivity. Here, two of them talk about their ordeal.
Unforgotten 9PM, UTV Dark secrets continue to spill out as the gripping mystery continues and Sara’s revelation about her past sends shockwaves through her marriage.
First Dates Ireland 9.30PM, RTÉ2 We get to eavesdrop on more (hopefully) romantic encounters as stockbroker Ciaran meets globetrotting online advertising executive Bami. Meanwhile, baker Áine prepares to break bread with dapper Gary, but will they be a recipe for success?
Fíorscéal 10.30PM, TG4 While studying snakes, toads and dogs, scientists have noticed peculiar behaviour just days before an earthquake strikes. Could this be a seismology breakthrough?
Generation F’d 10.30PM, RTÉ2 Last week’s opening episode showed how tough life can be for Ireland’s 25 to 35 year old. This edition turns its attention to those who are particularly vulnerable.
Eurovision: You Decide 7.30PM, BBC2 Music fans in the UK vote for the act they want to hear in Ukraine in May. Hosted live from the Apollo by Mel Giedroyc.
Fleadh Cheoil 7.30PM, RTÉ ONE John Creedon and Aoibhinn Ní Shúilleabháin host a new series on the festival. Tonight we hear music from Project West and Out The Gap as well as this year’s ArdOllamh Micheál Ó hAlmhain.
Jamie And Jimmy’s Friday Night Feast 8PM, CH4 Jamie Oliver and Jimmy Doherty welcome the comedian Michael McIntyre to their pier cafe, and together they cook a tasty scallop dish and traditional meat loaf.
Tina & Bobby 9PM, UTV It’s 1973, and the cracks are starting to show in the marriage of Tina and Bobby. Poor performances on the pitch set the scene for a poignant finale in this drama.
The Graham Norton Show 10.35PM, BBC1 Director Danny Boyle and the original stars of Trainspotting – Ewan McGregor, Jonny Lee Miller, Robert Carlyle and Ewen Bremner – join Graham to discuss the longawaited sequel.
Natural World – Echo: An Unforgettable Elephant 6.25PM, RTÉ2 Martyn Colbeck and Cynthia Moss look back on the legacy of Natural World’s Echo the elephant, who lived a long, remarkable life. They discover that Echo’s loss came at a particularly bad time as the herd are tested by drought, hunger and poachers without their matriarch to guide them.
Taboo 9.15PM, BBC1 The doors of London’s elite are still slamming in James’s face, but it looks like he may have found a new ally in the slightly alarming shape of chemist Cholmondely.