Boomer, Boz, Mikayla, Mason, and Lanny watch Candace's show revealing the mysteries of Kinkow, causing Boz to have doubts about being Co-King. When a temple is discovered belonging to an ancient evil named Kaita the Bat Rider (whose mummy is in the possession of the Tarantula People), Candace is trapped inside and the entrance is sealed by a force field that only the Kings can get through.
The truth about Mia's real mother is revealed when the story is published for everyone to see, ruining her debutant ball and shattering the life she thought she knew. Julian tries to rekindle an old flame who can help them get their new cancer drug on the market. Will and Joanna put their feelings aside to focus on solving Vivian’s murder.
Naomi and Max see a marriage counselor to decide if they are going to stay married, while Teddy tells Silver he won’t ruin her chance to have a baby if she agrees to his terms. Navid uses Liam’s celebrity status to help him get into an elite secret society and Annie rushes to tell Riley her true feelings before he undergoes an experimental surgery.
It’s the halfway point in the season, and the contestants find out that the weight of only one player on each team will count this week, but they won’t know who it will be until the weigh-in. With this week’s theme of “Leading by example,” trainers Bob, Jillian and Dolvett skype with kid participants Biingo, Sunny and Lindsay, and motivate each one to do just that. While Sunny creates a circuit training routine for her fellow classmates, Biingo tries to recruit more friends to his after-school sports club. Lindsay gives an anti-bullying speech to her peers, joined by special guest Cody Simpson, who also talks about his experience being teased before performing for the kids. The adult contestants compete in a crazy challenge requiring them to avoid three swinging pendulums while walking on a balance beam to retrieve calorie-coded plates matching five specific dishes.
Temp Jane March joins law firm Mosely and Loveridge to work for Simon Frost. She finds she's replacing a dead PA, Rose, who had fallen off a wharf and drowned after attending a client function on the viaduct.
As Lewis and Hobson embark on a relationship, a former don is murdered on the night of his release from prison - crushed to death by a Jaguar Mark two.
After learning that Candy Andy closed down his shop after their breakup, Caroline visits a psychic for a reading about her love life in the future.
Stassi comes back from Vegas to find that SUR is not the same, as Jax has started dating one of her friends, and Katie and Kristen have turned against her. When Lisa calls a staff meeting to put a stop to the infighting, Laura-Leigh explodes on Stassi for sending her bullying texts. Scheana nervously prepares for her first live performance at the world-famous Roxy, where after a rocky start, she not only steals the show but makes a very unexpected friend.
When Carrie is invited to a Halloween party in the city by Larissa, she decides to invite Walt to go with her to keep her company. It doesn’t take long before the night goes awry and Carrie is forced to babysit Larissa, who has clearly taken too many drugs. Walt finds himself in an uncomfortable position after a party guest gets a little too close for comfort. Elsewhere, Maggie convinces Mouse to go with her to Sebastian’s Halloween party at the diner to help keep tabs on him. After Doritt’s attempt to sneak out of the house is thwarted, she discovers hanging out with her father isn’t so bad.
Barney uncovers the lost episode of Robin’s “Underneath the Tunes” as Robin Sparkles. Meanwhile, Marshall and Lily are concerned that Ted’s new girlfriend is a stalker.
Daphne feels uncomfortable around Travis; Kathryn tries to get closer to Bay by volunteering to work at Carlton.
The dolls must lip synch to the spoken word, as they recreate classic moments from Drag Race history in scene-stealing viral videos.
Fly high and aim low with the Pawn Stars as they check out a Japanese machine gun camera. Used to train fighter pilots during WWII, will the guys have the skills to keep this deal on target? Then, Chumlee and Corey take a look at some sketches drawn by Spider-Man creator Stan Lee. Known as a writer, but never an artist, are they legit, or a web of lies? And later, Rick and the Old Man eye a $1,000 Federal Reserve note from 1918. Will they fork over a stack of hundreds, or is this G note past its prime?
The dismembered body of a roller derby skater means Angela goes undercover at the rink to find more clues to the woman's murder. Elsewhere, Cam worries over the sheer number of doctor appointments Booth is going to, and presses him for details.
Harry becomes an overnight father figure to nine-year-old Billy and teenage Anastasia, who both seem to be the product of Harry's past foray into sperm donation. Meanwhile Harry meets Rose, a beautiful, if neurotic, single woman who's out to have a baby on her own, and who believes Harry may have what she needs to get pregnant.
While investigating the murder of a young woman, Castle and Beckett find evidence that links her death with Senator William H. Bracken (Jack Coleman), the man responsible for Beckett's mother's murder. Determined to finally bring Bracken to justice, Beckett soon realizes that things are far more complicated than they seem.