As Steven remains depressed over Connie's silence, Greg and the Gems misinterpret his sadness and take him to a ranch house for a vacation to cheer him up. The vacation just puts Steven more on edge, until he eventually tells Greg what it is he's upset about.

The needle on Lydia's record player is broken, and Klaus claims to know where on is if Mavis teaches him to bat out.

Dr. Gilman has to take a test to prove he's a real doctor.

The case seems to take a major turn when Arnold, the son of the dead Cardenas couple, shows up. Meanwhile, Amanda is led to a mystical coven in the woods of Wendimoor led by the forest witch Wakti Wapnasi, where she begins to master her unique powers.

Host Tiffany Haddish; Taylor Swift performs.

Sarah is plunged into a dark place and must confront the demons of her past. Larry is taught a valuable lesson and is redeemed. Anna and Carolyn realise that Regina may deserve their trust.

Warlock has gone dark! By absorbing J'son into his gem, Warlock has become Dark Warlock with his sights set on conquering the galaxy, starting with Spartax.

The Guardians and Nova battle Dark Warlock and J'son on Planet Y. Can our heroes save their friend Warlock and the universe before it's too late?

The Mysticons dive under the sea to retrieve the statues of Arkayna's parents, and are attacked by a cute, little mermaid; she brings them to mermaid Queen Truefin, who has Arkayna's parents, but is using them as a sacrifice to a terrible kraken.

The 1987 Shredder and Krang recruit the 2012 Bebop and Rocksteady, finding them better than their own incompetent counterparts.

The 2012 Ninja Turtles trains the 1987 Ninja Turtles in order to be ready for a dangerous mission to hunt down 1987 Shredder and Krang while April and Casey enlists Karai and Shinigami in order to track down Bebop and Rocksteady.

After discovering a treacherous scheme, the Turtles, along with April, Casey, Karai and Shinigami, enlists the Mighty Mutanimals in order to defeat Bebop and Rocksteady. Meanwhile the 1987 turtles are trained enough to take down 1987 Shredder and Krang.

Six more teams compete in the fourth heat, as robots Iron-Awe 6, the Kegs, Tauron, Nuts 2, Concussion and Androne 4000 battle through a series of group battles and knock-out rounds. Among the contestants controlling the machines is a veteran of the series, returning to defend his legacy. Presented by Dara O Briain and Angela Scanlon.

Tess Daly and Claudia Winkleman reveal the results of last night's viewers' votes, and the two couples with the lowest combined scores from the judges and the audience must compete in a dance-off to retain their place in the contest. Plus, music from Seal and a special Remembrance Day performance by the professional dancers, accompanied by the RAF Spitfires Choir.

Coral reefs are home to a quarter of all marine species. Survival in these undersea mega-cities is a challenge with many different solutions. A turtle heads to the reef's equivalent of a health spa - but she must use trickery to avoid the queue. A remarkable Grouper uses the fish equivalent of sign language to collaborate with an octopus, flushing their prey out of hiding holes. A metre-long, ferocious-jawed Bobbit Worm hides in its tunnel. Monocle Bream retaliate by squirting water to expose its sandy lair.

Coming Soon...

In spring of 1905 in England, Margaret Schlegel is at home with her dear but overbearing Aunt Juley and her hypochondriac brother Tibby when she receives a letter from her younger sister Helen, currently visiting the Wilcox family at their country home, Howards End. On hearing that Helen has fallen for the youngest Wilcox son, Paul, Aunt Juley is swiftly dispatched to Howards End to represent the Schlegel family - slightly prematurely as the engagement does not come to pass. Leaving the social awkwardness of the Wilcox encounter behind them, the Schlegels attend a concert in London. During the performance Helen sits next to Leonard Bast, a struggling young bank clerk, and inadvertently leaves the concert with his umbrella. On discovering the mix-up, Margaret gives her card to Bast and implores him to stay for tea with them at their Wickham Place home, but he quickly becomes uncomfortable in their company and leaves. In a twist of fate, the Wilcoxes move to London and take a flat around the corner from the Schlegels, leading Margaret to strike up a friendship with the enigmatic but ailing Mrs Wilcox.