Mob City

Hecky Nash (guest star Simon Pegg) bribes police detective Joe Teague (Jon Bernthal) to protect him during a dangerous blackmail scheme involving the Los Angeles mob. Seeing this as a perfect opportunity to bring down one of the city's most infamous mobsters, the Los Angeles police force looks to Teague for key information in hopes of crippling the heart of L.A.'s organized crime.

Hal Morrison (Jeffrey DeMunn) and Captain William Parker (Neal McDonough) interrogate Jasmine (Alexa Davalos) in a desperate attempt to gain insight into Hecky Nash's blackmail scheme. Keeping a close eye on Jasmine, Joe discovers she's hiding a secret that could cost her her life. Meanwhile, Sid (Robert Knepper) and Terry (guest star Richard Brake) get a tip that leads to a violent display of revenge.

Bugsy unveils a plan that will transform the city. Amid doubts from a past attempt to create a gambling empire, Bugsy makes a violent display to prove his point. Meanwhile, the police force scours the city for leads, more determined than ever to put Siegel behind bars. And Jasmine struggles to keep out of harm's way as more details and suspicions emerge.

The LAPD finally gets Bugsy Siegel behind bars, but what initially appears as a shining moment for the department soon takes a turn for the worse. Having heard that Siegel has been arrested, mobster Jack Dragna takes the opportunity to make his move. Meanwhile, Jasmine is shaken after receiving a frightening threat at her apartment. And Joe receives an unexpected visit from Sid.

With Siegel's trial quickly approaching, a violent massacre wrecks Captain Parker's plans and leaves the LAPD at a loss. All the while, Jasmine is terrified when she realizes she overlooked a detail that could put her in grave danger.

Despite hardships, Captain Parker is more determined than ever to clean up the corruption within the LAPD and announces plans to target the source internally. Meanwhile Meyer comes to Bugsy with unwelcome news.