The trainees are playing "Hidey chugger" in the Roundhouse Park when Koko comes across Hodge playing a chugnav game. Koko wants to beat Hodge's top score, she forgets about Wilson and Brewster and goes off to try and complete all the levels of the chugnav game. Old Puffer Pete has broken down, Vee asks Koko him back to the depot but the game distracts her and she forgets all about him.
Po must look after Taotie's son after he is taken to prison after a failed attack on the Jade Palace. His loyalties are split when he tries to help his father get out of prison though he has warmed to Po.
When an important witness turns up dead, Jo is caught up in the dangerous investigation of the suspected rapist who was freed on her watch in D.C.
Danny accompanies a dangerous ex-mobster who is helping him find bodies on cold cases in exchange for leniency for his son on grand theft auto. Meanwhile, Jamie works undercover in a boiler room operation, looking for a secret about the Sanfino family.
With Michael out of town, Nikita turns to Owen to help her track down and steal another black box from a Guardian. Unfortunately, she discovers that Owen is working for an unlikely employer that could jeopardize Nikita's whole operation. Meanwhile, Amanda realizes that Alex has acquired privileged information about Semak and that information could only have come from Percy. Furious that Percy undermined her, Amanda strips him of all his amenities. Back home in Russia, Alex finally makes her move on Semak.
To locate the missing colonists, Anakin, Obi-Wan and Ahsoka go undercover to infiltrate the slavers on Zygerria. Anakin struggles with his emotions as a wily Zygerrian queen forces him to take questionable actions in order to carry out his mission.
Michael and Kate are forced to work together to try and save a patient with a deadly virus. Meanwhile, at Holt Neuro, as Michael treats a nervous bride-to-be who is experiencing headaches, he notices her mother is exhibiting symptoms of a serious condition.
As Sam and Dean race the clock on a high-stakes mission, Bobby seeks the help of an unlikely old friend to solve one of the most personal cases of his life.
The crew investigates Rocky Point Manor and a Civil War battlefield.
Stephen Fry asks some intelligent questions. With Jo Brand, David Mitchell, Phill Jupitus and Alan Davies.
With guests Jessica Biel, Bradley Cooper, Sarah Millican, James Corden and Lenny Kravitz.
The boys decide to put on a traditional family Christmas special featuring their family, friends and a few very special guests, including Grammy winning recording artist Kelly Clarkson (playing herself). The episode features three new holiday songs - Isabella's "Let it Snow", a Buford and Baljeet rendition of "Good King Wenscelas" and the whole gang singing "We Wish You a Merry Christmas".
C.J. and Janine are not comfortable with Malik's roommate; Claretha tries alternative cancer-fighting treatments
Janine sponsors a young girl; Curtis and Ella become DeShawn's foster parents.
The Flame Keepers realize their mistake too late. Vilgax wants the power of Daigon. The Forever Knights are out to destroy Daigon. Ben and the team try to sort things out.
Respected midwife Elizabeth Brownrigg secretly abuses her servants and ruthlessly tortures, beats and starves them. It's not until one girl is found dying from numerous open sores that this woman is finally unmasked and she is branded a monster for centuries to come. Kerry Lyn Dalton discovers while she was in jail, her flatmate sold some of her belongings to pay for crystal meth, which both women take. Kerry, high on meth, responds by torturing Irene May to death via everything from electrocution to stabbing to bludgeoning. Martha Rendell moves in with her lover, who leaves his wife for her, but keeps their kids. Martha seems to have jumped out of a Grimm's fairy-tale as a wicked stepmother – she makes the children ill and pretends to swab their throats with medicine, which is really acid. Killing three kids, the forth one runs away and reveals she got pleasure from doing this.
After an over-night smash video hit on the internet, Austin pressures Ally to finish lyrics on a new song because he wants to release another music video.
Mock the Week star Andy Parsons hosts stand-up comedy from the Apollo, with special guests including the fantastic Andrew Lawrence, and one-liner king Milton Jones.