Kara goes toe-to-toe with Astra when her aunt challenges Kara's beliefs about her mother. Also, Cat is threatened with being removed as the CEO of CatCo after a hacker exposes her private and damaging emails.

An alien presence arrives on Earth with the intention to end all suffering and guide humanity into a utopia. But when the aliens refuse to reveal their appearance, some wonder if this dream is instead a nightmare.

In the final phase of the competition, the final four artists perform duets with their coaches and sing solo in their last voting performances.

Team Scorpion must stop a catastrophe on Christmas Eve when heavy rain creates a large crack in a dam, putting an entire town in danger.

Jane and Rafael are still at odds with each other as they are about to celebrate Mateo's first Christmas. Jane discovers that the scholarship she thought she had been awarded isn't quite that and now needs to find a way to pay for grad school. Rogelio has employed an intern and is having trouble trusting him. Petra is struggling with the latest dilemma her mother has gotten them into. Meanwhile, Michael is trying to find Luisa's mother who he now suspects is not dead and may be involved with Sin Rostro.

An alien presence arrives on Earth with the intention to end all suffering and guide humanity into a utopia. But when the aliens refuse to reveal their appearance, some wonder if this dream is instead a nightmare.

A professional baseball pitcher's daughter goes missing; Rusty is put in an awkward position as Slider approaches the last phase of his trial.

Peggy and Ed make a run for it.

Martin prepares Kate for a dangerous job; Gabi confronts the intelligence agents about Martin Odum. In 2001 Prague, Ballard and Gabi discover Dmitry has a vulnerbility and in 1984, Alex is recruited for a distinquished position.

On the dwarf planet Ceres, Detective Miller is tasked with finding Julie Mao and returning her to her rich parents on Luna. In New York, UN executive Chrisjen Avasarala interrogates a captured operative of the Outer Planets Alliance (OPA), a militant Belter group, about contraband stealth technology. Underway to Ceres, the ice trawler Canterbury receives a distress signal from the freighter Scopuli, and Executive Officer Jim Holden is ordered to lead a rescue mission with the ship's engineer Naomi Nagata, the mechanic Amos Burton, the pilot Alex Kamal, and the medic Shed Garvey. They find the ship empty but for a distress transmitter, but as their shuttle heads back to the Canterbury, a stealthed ship destroys the ice carrier with nuclear torpedoes.

When a suspected North Korean spy is poisoned and hit by a truck carrying Christmas trees, the team must search for who is responsible for smuggling spies into the country. Also, Deeks and Kensi try to find a way to include their mothers in their Christmas plans, and Hetty notices that Granger isn't feeling the holiday cheer.

ISIS releases a Chinese recruitment song, The Best F#@king News Team debates a controversial zombie nativity scene, and Andy Cohen discusses his miniseries "Then and Now".

Coming Soon...

A South Carolina lawmaker's Christmas card features the Confederate flag, and Larry examines Ted Cruz's surge in GOP polls with Aida Rodriguez, Jordan Carlos and Mike Yard.

Coming Soon...

Stephen welcomes actress Jennifer Lawrence, historian Doris Kearns Goodwin, plus a musical performance by Sleater-Kinney.

Coming Soon...

Ali finds herself a little too close to Leslie when she seeks Leslie's advice on her UCLA application; Josh confronts Shelly about the past; Sarah uses a hard-won date night to explore some of her sexual fantasies.

Puss gets scared when angry bees invade the town, so he calls on the Piper, who has helpful powers.

Coming Soon...

Coming Soon...

Fran ramps up her manoeuvres against Jac, and when she raises the possibility of a formal complaint from a patient's sister, Hanssen has to take her concerns seriously. But has Fran underestimated Jac's ability to fight back? Serena's disappointed when her daughter bails out of their planned Christmas together. Raf and Fletch are also dreading the festivities, but perhaps Serena has the perfect solution? In the first flush of love, Dominic's keen to buy the perfect Christmas present for Lee with the help of a willing patient. However, a shocking revelation leaves him reeling.

On a leave of absence from the police force, Luther is laying low in a rundown cottage on the edge of England. But a visit from his old colleagues at the Met brings a shocking piece of news that draws him back to London in search of the truth.

Meanwhile, a gruesome serial killer has struck the city, eating body parts as he goes. With a trail of clues leading from one crime scene to the next, Schenk and his team must work out the twisted logic that connects each victim. But this murdering mastermind is more than a match for the police, outsmarting them at every step. It's not long before Luther is back in the bullpen, determined to steal a march on the killer before another mutilated body joins the mounting pile.