Episode 1
In the second season opener, Johnny Torrio mentors Capone in Brooklyn, and then the two reunite in Chicago, where their bootlegging enrages local Irish gangsters.
Episode 2
A new mayor forces Torrio and Capone outside Chicago to nearby Cicero. There, Capone's brother Frank fixes an election, placing himself in jeopardy.
Episode 3
A betrayal destroys peace in Chicago and Torrio and Capone seek revenge against the Irish gangs. Meanwhile, the Beer Wars make Capone Chicago's top gangster.
Episode 4
Capone uses the St. Valentine's Day Massacre to assert his power over his enemies. Meanwhile, President Hoover takes notice; and dispatches Elliot Ness to take on Capone.
Episode 5
Al Capone outwits Eliot Ness, but Capone's criminal empire remains in jeopardy when the IRS plants an undercover agent in his gang.
Episode 6
With Capone in jail, Frank Nitti, Paul Ricca and Joe Accardo take over. Meanwhile, a Hollywood scandal presents Sam Giancana with a chance to prove himself.
Episode 7
Joe Accardo sets his sights on Las Vegas, but the Outfit is threatened when Sam Giancona incurs the wrath of young attorney Robert F. Kennedy.
Episode 8
In the second-season finale, Joe Accardo and Sam Giancana have a falling out, and the fate of the Outfit rests on the outcome. Meanwhile, Joe Accardo cleans up loose ends before retiring.
