Max and Caroline’s plans to attract a more sophisticated clientele to their dessert bar take a turn when Max befriends a bouncer whose team of arm wrestlers becomes their latest patrons. Also, Max and Randy continue to text each other, but when she runs out of sexy messages to send him, Oleg offers to be her ghost writer.

The CIU team works to exonerate a political activist serving a life sentence for planting a bomb at a mosque that killed a prominent Imam and three worshippers. The re-examination of the case calls into question the NYPD's role, which puts Hayes in Wallace's crosshairs.

Crime in Gotham is at an all-time high, as Penguin struggles to uphold his promises to the city. Meanwhile, Butch goes down a dark path with the infamous Red Hood Gang and Bruce begins to investigate Ivy's whereabouts.

Michael is in critical condition fighting for his life in hospital, as we are given flashbacks to the start of Jane and Michael’s romance. Police question Petra (really her twin sister, Anezka) and find her acting suspiciously and Jane and Michael’s mom finally learn to get along.

Kevin forgets his wedding anniversary and tries to use Goody's heroic cop story to bail himself out.

After the bodies of two young L.A. transplants are found poisoned, Chloe and Lucifer hunt for the killer. Upon Maze convincing Chloe to go out for drinks, which the detective perceives as an act of friendship, but is actually part of a bet between Maze and Lucifer, the two make a shocking decision.

Team Scorpion must find a boy from Ralph’s class who goes missing on a field trip after he accidentally has a run-in with a deadly criminal. Also, Toby gets closer to finding out the identity of Happy’s husband.

CADMUS attacks National City with a Kryptonite-powered villain who ends up seriously hurting Supergirl. Superman blames Hank because the Kryptonite was stolen from the DEO. Meanwhile, Kara’s first day at her new job doesn’t go as planned after she meets her new boss, Snapper Carr.

Leonard and Penny must separate a quarreling Sheldon and Amy when their cohabitation does not go as planned, and Sheldon threatens to break off their relationship when Amy refuses to adhere to the bathroom schedule. Also, Howard and Bernadette find unexpected guests at their house when they decide to stay home from a planned vacation.

On the third night of battles, 18 artists bring their A game to another round of stunning vocal showdowns - but only some will continue on in the hopes of winning the overall competition.

After landing in 1962 Las Vegas, Flynn has the team on the run with the era's most infamous mistress. During the restless, neon-lit night, Rufus meets his old mentor Anthony Bruhl, whose motives may be darker than anyone suspected. Meanwhile, Lucy's personal life is falling apart, Wyatt attempts to change history for himself, and we discover Flynn intends to gamble with far more human life than we realized.