Tray and Cousin Bobby intercept the kids at school and take them on a trip down memory lane. Shay tries to track down the kids, and Josh reminds Shay that it's her lie that disrupted the family dynamic.
A secret structure on a sinister mountain, an industrial compound swallowed by a forest, and a mysterious run in a sand dune are strange deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.
After a fatal gang bus shooting, Gwen must defend a 14 year old, while also reconnecting with her former law professor and secret crush, Bennett. Gwen grills Tracy for details on her mystery lover.
When Bryan comes to Los Angeles to see Ronnie, she hosts a dinner party at Bernard's to try and impress him. Dave invites Patricia and is excited for his first official date night with her, while Colin awkwardly brings his Uber driver as his date. Meanwhile, Artem shares his new artistic venture with Nichole.
Major competition ensues between Midtown Sound artists Take 3 and Noah Brooks when they fight for a coveted track produced by one of the industry's hottest producers. Blasts from the past are in full effect when Paola and Jahil explore their complicated history, Noah and Alex revisit their time together and Derek invites a date to the salon's reopening celebration.
When Barry and Team Flash find a way to enter The Thinker’s lair, Ralph considers crossing a dangerous line to defeat DeVoe. Meanwhile, Joe is concerned by Harry’s recent behavior.
Four master smiths compete alongside their apprentices to forge an iconic weapon of warfare: the trench knife; each team must work together, tagging in and out every half hour, with only one smith allowed to touch the knife at a time.
Richard's plan for a straightforward upgrade on a '62 Ford Galaxie goes south when the Monkeys discover the worst body panel they've ever seen after it returns from sandblasting.
Stan is frustrated with traffic so he goes to the mayor and proposes that the town build a bullet train, but the mayor laughs off the idea; Roger pushes Stan into running for mayor; Stan wins the election but finds himself overwhelmed.
Rachel confronts her mother while Serena gets ambushed someone from her past, threatening her relationships with the remaining contestants. Chet struggles with Gary's offer.
Rio’s feeling the heat from the FBI investigation, so he abruptly shuts down operations, cutting off Beth, Ruby, and Annie's money supply. Their attempt to go back to being ordinary housewives is short-lived when Mary Pat puts the financial squeeze on them -- forcing the three women to commit another heist.
Conrad is hit by a bike and badly sprains his ankle, but works through it when he takes the case of his old medical professor, who is hallucinating visions of her old patients. Devon is tasked with admitting Conrad, who refuses any sort of treatment. Nic tries to navigate her emotions while mourning the loss of a patient and Bell operates on a foreign dignitary with unforeseen complications. Meanwhile, Lane and Bell's relationship grows closer.
Marcus spies a money-making opportunity when the city goes into a frenzy of fundraising at marathon time, and Jason bets Aurelius he can beat him in the big race.
Ariana and Brittany seek relationship advice from Lisa, while Stassi throws a party to relaunch Katie's beauty blog. Kristen's boyfriend Carter questions Sandoval about her night in Mexico with James. Katie and Tom celebrate their first wedding anniversary, while Jax and Brittany's relationship takes a surprising turn.
After consuming the brain of a bachelor playboy, Liv heads to a club to meet up with Clive and Ravi. Meanwhile, Major is assigned an enormous task. Lastly, Clive is still struggling with the arrangement he’s made with Bozzio.
Leila suspects Denier might be Adrian's next target and is determined to save him. But her doubts about Adrian are causing friction with Tess.
Lucifer and Chloe investigate a murder during which a witness claims a winged guardian angel saved her life, causing Lucifer to become paranoid about his own actions. Meanwhile, Pierce and Chloe's relationship takes an interesting turn and Lucifer discovers something that could change everything.