BBC Two Northern Ireland HD Saturday

Preview of upcoming programmes from BBC Two

Mojo and Bo are after the treasure of the Knights of Swoppiton, but Preston is searching for it too, so they need to get a move on

Searching for a vital part of the ship lost during their crash-landing, Cosima and Big Lizard find Dunk stuck on a beach and use science to save the day and make a new friend

Herbert takes his failed cooling hat invention along on a quest, using it to save the day after being faced with the Riddlemaster's jibes

Grizzy finds a compass that indicates the direction of one's own desires

Grizzy finds a sceptre that covers anything it touches in gold

Roy's first Tera training test pits him against a familiar face in the form of gym leader Brassius

The brothers go back to school as undercover teachers but have to do as the other one says. Glow Up star Axel helps disguise them as Mr Longgrass and Mr Pickles

Giant is pranked by Nitro when he appears as a guest of honour at a fake school award ceremony. The other Gladiators have sneaky fun backstage at Sheffield Arena

The team takes on Bro's in Control stars Joe Tasker and Adam and Callum Beales in three crazy challenges

Current affairs reports aimed at a younger audience

Steve Backshall goes in search of the fastest predators on earth, testing the speed and accuracy of a gannet dive in an experiment in his junkyard using a crane and an old caravan

A daily morning service from Guru Nanak Darbar Gurdwara Sikh temple in Gravesend, Kent, including the culmination of the Akhand Path, a 48-hour continuous prayer

Monty Don sows iris bulbs to create a dazzling spring display and plants elephant garlic for next year's kitchen. Carol Klein reveals some new seasonal planting combinations

A new family of dairy farmers are introduced. Meanwhile, Raymond goes the extra mile to save his lambs, and Kirsty and Aimee take last year's calves to market

Kelvin Fletcher and Liz buy their first livestock - a flock of rare breed sheep. They try to shear them so they can make a quick return on the investment, but nothing goes to plan

Si King and Dave Myers go baking in Italy, where dishes include classic focaccia with rosemary, and a pasta pie. They also pay a visit to Si's sister, who lives in Tuscany

A spinster undergoes a remarkable transformation and embarks on an affair with a married man. Romantic drama, starring Bette Davis and Claude Rains

A free-spirited young socialite's fortune suddenly changes when she is diagnosed with a brain tumour. Melodrama, starring Bette Davis and George Brent

A three-month-old sea otter pup learns what is safe to eat, and a seven-month-old macaque is forced by his mother to toughen up

Paul Martin presents the show from Grittleton House in Wiltshire, where Mark Stacey is bowled over by a collection of 19th-century alphabet tiles made by PoWs

Astrophysicists and engineers use new technologies to try and investigate the mystery of strange flying objects in the sky

A man's obsession with UFOs drives his family away and leads him to where aliens are about to make contact. Steven Spielberg's sci-fi drama, with Richard Dreyfuss and Teri Garr

A selection of archive performances from the year, including appearances by Bob Marley, Supertramp, Kraftwerk and Bay City Rollers, as well as Abba in Blackpool on Seaside Special

Richard E Grant narrates the story of the classic Queen song, featuring contributions from band members Brian May and Roger Taylor

The rock band in performance at London's Hammersmith Odeon on Christmas Eve, 1975, featuring early singles including Bohemian Rhapsody, Now I'm Here, Liar and Keep Yourself Alive

A collection of TV appearances by the rock band from the station's archives, including highlights from their trips to the prestigious Montreux Pop festival in the 1980s

Grace and Shane push boundaries for Lindsay's sake as a threat closes in. Aisling and Tommy respond to a call-out where things are not as they seem, with unexpected consequences

An investigation into unlicensed opioids that have been driving a major public-health crisis in West Africa, and Diyva Arya reports from Indian-administered Kashmir

Preview of upcoming programmes from BBC Two

Charlotte Smith and Adam Henson visit Herefordshire during the apple harvest, and discover the various kinds of cider production to be found in the county