After Theodore makes a wish, the Chipmunks try to learn what it was, so they can make it come true.
Alvin borrows Simon's invisibility suit, but gets trapped when the zipper gets stuck.
David's behaviour grows increasingly erratic following his decision to stop taking his medication.
When people find out the village was once called "Badgerville" after Sticks' evil ancestor, anti-badger sentiment runs rampant. An election to rename the village leads to Eggman seizing power.
Eric and the team begin negotiating the return of valuable paintings stolen from an art gallery, but the situation gets muddled when the thief then kidnaps a gallery staffer.
When Isabel returns to school, her smart ways make her unpopular so she tries to change herself to fit in.
Scarlett Johansson hosts for the fifth time alongside musical guest and Grammy winner, Lorde.
Pol Veterinary Services take a recently graduated vet under their wing, as they flip-n-stitch a cow, clamp bull calves "jewels", tube a colicky horse and treat a rescue rooster with Bumblefoot.
It is the third of the live knockout shows, and performing for a place in the quarter-final tonight are will.i.am's team. His six remaining acts will become three as they sing for him and fellow coaches Sir Tom Jones, Jennifer Hudson and Gavin Rossdale. The coaches can only watch and give their opinion as it is now down to the public to vote for their favourite act, with the two acts receiving the most votes and a third act saved by will.i.am going through to the next stage. Gavin Rossdale also performs live in the studio with his band Bush.
Steve and Amy Allan investigate paranormal activity at an historic estate in Medina, NY. During their unnerving investigation, Amy is jumped by a female entity and is overwhelmed by one of her darkest discoveries to date.
Ant and Dec's hos another jam-packed show full of audience surprises, live studio games and huge giveaways. Special guests include s pop legends Steps.
Sean and Kate have decided to embrace their window of opportunity and travel the country before their 1-year-old son Emery starts school. These two both work from home, so they're ready to hit the road and explore, but the only problem is they have 2 big dogs they need to bring with them. They've asked John and Zack to help them create a modern home that's sleeps everyone comfortably, including their big furry friends, and is durable enough to take on some miles. When weight becomes a concern, Zack worries his solution for a portable dog yard will keep this family stationed.
Grammy Award-winning duo The Chainsmokers join Rob, Chanel and Steelo to cringe at some "Biters," ride "Stolen Mattresses" and marvel at the magic of real life "Teleporters."
Ken is tormented by an old professor who comes in for treatment. Alison has a new assistant who is too chatty. Damona ends her relationship with Eric and tries to take a new relationship with Pat slowly.
The Titans are determined to find out what happened to the missing two o'clock hour during Daylight Saving Time.
Mac and the team travel to Hawaii to help out when an earthquake strikes and partner with Chin Ho and Kono to rescue a group of government scientists trapped in a building about to collapse.
The tables are turned on Cassandra when Owen traps her in a dangerous game of cat-and-mouse, revealing that he's not the only one who needs to learn a thing or two. Claire spends a relaxing night out.
Adam Hills, Alex Brooker and Josh Widdicombe examine the biggest, most entertaining news stories and make use of the #isitok twitter handle, where viewers tweet in edgy current affairs questions that other shows might duck. In this edition, the boys are joined live in the studio by comedian Harry Hill and physicist Professor Brian Cox.