King Jungjong decides on the proper punishment for Min Chi-hyeong. Meanwhile, the deadline to find the true Goryeo paper is fast approaching.
From drug trafficking, to one of the biggest bank heists in history, and even a mining scam that rocks Wall Street, these scheming masterminds all one thing in common…they committed their crimes underground.
An amateur caver emerges traumatised from a labyrinth of subterranean grottos where he says he lost his friend. Laurene tries to unravel fact from fiction in his witness statement before contemplating a perilous descent. At the same time, Cora thinks that the Mayor's daughter has been kidnapped by a mysterious group of activists who are leaving their marks on the walls of Villefranche.
A traditional ritual of a school with mortals, which is producing tension in the city. Cora has visions of an underground network.
A suicide shakes the staff. Dr. Choi and Dr. Halstead face off over how to treat a patient with stroke symptoms. Family turmoil unfolds when a boy is treated after falling in a river. The importance of learning from mistakes is emphasized to Dr. Reese.
Jonah accompanies Amy on a trip to help her mom and dad move out of her childhood home. Meanwhile, Glenn desperately wants to win the freshly minted Cloud 9 Integrity Award, but starts to worry that Garrett has a better chance of winning; Dina tries to take advantage of Mateo's relationship with Jeff to fix problems in the store - including a roach infestation; and Cheyenne gets caught up in Glenn's self-serving campaign.
Will, Katie and Broussard search for a way out of the colony. Maddie gets some visitors in the Green Zone. Bram looks for closure.
Jackson and April travel to Montana in order to perform a complicated surgery on a young patient, but Jackson’s mind is elsewhere, and April is forced to step up and get him back on track.
Sent north by Alfred to ransom enslaved king Guthred, Beocca seeks help from Uhtred, who makes a new allegiance in his quest for vengeance.
With debtors at his heels, Albert Hill, son of imprisoned crime legend Vic Hill, teams up with mate Charlie Cavendish to square his bills. After the pair scrapes together a sizable sum, they wager it all on boxer Billy Ayres. But a local mobster has his own man in the ring and designs on the match.
With the clock ticking on their lives, Albert, Charlie and Billy plot to steal back Saul’s diamonds, cutting in Sonny's girl Lotti as a partner. To crack Sonny's safe, Albert must track down an old family friend. Meanwhile, Fink follows clues in the heist footage back to Charlie.
As Albert, Charlie and Billy process their windfall, footage of the heist goes viral, reaching the eyes of Bob Fink, a dirty cop with old ties to the Hill family. Meanwhile, in a new scheme set up by Vic, the trio goes in on a diamond job for Saul Gold, a "businessman" who doesn't forgive mistakes.
Rowan is caught by surprise when someone from his past resurfaces, and Olivia has to make a life-changing decision about the campaign. Meanwhile, flashbacks reveal exactly what happened the night of Francisco Vargas’ assassination.
Desperate to pay back Saul before time runs out, Albert, Charlie and their new ally, Chloe Koen, fly to New York to fence the gold. But a careless mistake leaves them racing all over the city to salvage the deal. Meanwhile, Billy and Lotti plot to free the safecracker Norman from Sonny’s lair.
After patching things up with Saul, the boys get a lead on liquidating the gold bars, thanks to Chloe. But the buyer, a wealthy sheik, proves finicky. The gang must think on their feet, while at the same time eluding Fink, who is moving ever closer to their treasure.
As the Hill family and gang regroup, Charlie returns with news of Jones and Dwyer’s plans to sell the gold. Lily wants nothing to do with it, but Albert hits on a better idea: forget the gold and grab the cash. But first, the gang will have to do some recon inside Jones’s heavily guarded lodge.
Indianapolis detective Christine Mannina arrives on the scene of an execution-style shooting that's left one man dead and another in critical condition. She knows she must convince a reluctant witness to come forward and put her life on the line.
Jones and Dwyer race to the Liverpool docks to rendezvous with the Corsican mob while the gang gives chase. With Vic stuck in the police van, Albert must concoct a crazy plan save his father, sabotage the Corsican deal and make off with the cash—all without getting everyone blown to bits.