Riley starts a new romance. Meanwhile, Bonnie wants to rekindle things with Brad, so she asks for Tucker's assistance.
When Oliver and his team destroy Slade's centrifuge, he attacks them as Deathstroke to get what he needs to find a replacement. Meanwhile, Laurel ponders what to do with Slade's information, and Oliver tries to convince Thea to help him protect their finances from Isabel.
Boyce finds out he has a award nomination. Lolli tries to distract him with her sex appeal.
Mel's wild father sends out an inappropriate photograph that could harm her run for the state senate; Ryder tries to come up with a winning idea for a business club.
Maids find blood-stained sheets but no body in a hotel room, booked with a credit card stolen from businessman Charles Hutton by Rufus Barton, a school classmate and secret lover of Hutton's daughter Georgia.
One castaway's paranoia could lead to a game-changing flip, and a grade-school memory challenge looks more like a college exam for exhausted castaways.
Philip and Elizabeth both find themselves faced with painful turns in their various missions. Stan fights to gain access to an American military program that could give him the upper hand in his battle of wills with Oleg.
Perez offers Robbie a loan to settle up with Christie. Eddie comes back to Tremont on new terms. Jerome gets antsy with his private eye. When Kosgrove's donk is stolen, the Tremont family scrambles to track it down. Christie makes a final decision about the future of Tremont.
Anna Nikolis is up to her eyeballs in debt, and her only way out is to sell her beloved home. She originally bought the place with her mother, and they had big plans to renovate and turn it into the perfect house for Anna, her husband, their children and of course Mum.
Tony and Codfish buy a school bus from the 1960s; Mitchell must prove his skills.
Zane gives up half his power to save P.I.X.A.L. just as foes attack from all sides. Meanwhile, Lloyd and his father travel to Hiroshi's Labyrinth.
Underneath Ninjago City, the ninjas discover secrets about the Serpentine when they fight alongside them against the Nindroids.
Richard presents experiments gone wrong, revealing how easy it is for scientists to injure themselves while pole dancing, playing on a pogo stick or cutting down trees.
Crews are racing to rip through ground as winter descends. Ken and right-hand man Guillaume fight to keep the Beast sluicing through subzero temperatures only to discover the dirt they’ve banked on has run dry. Cam’s plans to mine an ancient waterfall go sideways when the treacherous ground threatens to bench his iron for good. Karl and right-hand man Kyle’s mechanical skills are put to the test when the season takes its toll on Sulphur Creek’s operation.
Richard combines science and home footage to reveal how easy it can be for a person to injure or embarrass themselves while walking on ice or riding in a shopping trolley.
Robin tries to teach Spanish-speaking brothers his superhero ways.