Source plot synopsis — includes the ending
Chicago, 1919: A young Al Capone arrives to work for mob boss Johnny Torrio. He meets Torrio's top man, "Big Jim" Colosimo, who runs business and politics in the First Ward while secretly on Torrio's payroll.
Prohibition is enacted a year later, causing Torrio and other gangsters like Dean O'Banion, George "Bugs" Moran and Earl "Hymie" Weiss to compete for profits in bootleg liquor and beer. Colosimo is too old and comfortable to desire the new liquor racket, so Capone convinces Torrio to allow Colosimo's assassination, making Torrio kingpin.
A reform mayor is elected, so Torrio and Capone change their base of operations to Cicero, a few miles away. Capone also has O'Banion killed and makes a play for Maureen Flannery, the widow of one of Colosimo's men.
Weiss and Moran return the favor by ordering Torrio to be shot. Torrio barely survives the attempt and retires to Italy, turning the full rackets over to Capone. Capone retaliates by killing Weiss and forcing merchants throughout the city to pay for "protection." A sergeant in the Chicago police, Schaefer, is promoted to captain and vows to end the bloodshed and extortion and put Capone behind bars.
With the heat on from the cops, a crooked newspaperman named Keely tries to bribe Schaefer but fails. He persuades Capone to move to Florida until things cool down. From a safe distance, Capone masterminds the St. Valentine's Day Massacre, with several of Moran's men gunned down in a Chicago garage.
Capone and Moran call a truce, but when he learns Keely has been helping a Moran plot to kill him, Capone ends the reporter's life instead. Maureen finally has her fill of Capone's corruption and violence, while Schaefer, now an inspector, and the feds find a way to finally put Capone away—on charges of tax evasion, earning him 11 years at Alcatraz.
The final scene has Capone brutally beaten by Alcatraz inmates, who are delighted to catch him without bodyguards.
Prohibition is enacted a year later, causing Torrio and other gangsters like Dean O'Banion, George "Bugs" Moran and Earl "Hymie" Weiss to compete for profits in bootleg liquor and beer. Colosimo is too old and comfortable to desire the new liquor racket, so Capone convinces Torrio to allow Colosimo's assassination, making Torrio kingpin.
A reform mayor is elected, so Torrio and Capone change their base of operations to Cicero, a few miles away. Capone also has O'Banion killed and makes a play for Maureen Flannery, the widow of one of Colosimo's men.
Weiss and Moran return the favor by ordering Torrio to be shot. Torrio barely survives the attempt and retires to Italy, turning the full rackets over to Capone. Capone retaliates by killing Weiss and forcing merchants throughout the city to pay for "protection." A sergeant in the Chicago police, Schaefer, is promoted to captain and vows to end the bloodshed and extortion and put Capone behind bars.
With the heat on from the cops, a crooked newspaperman named Keely tries to bribe Schaefer but fails. He persuades Capone to move to Florida until things cool down. From a safe distance, Capone masterminds the St. Valentine's Day Massacre, with several of Moran's men gunned down in a Chicago garage.
Capone and Moran call a truce, but when he learns Keely has been helping a Moran plot to kill him, Capone ends the reporter's life instead. Maureen finally has her fill of Capone's corruption and violence, while Schaefer, now an inspector, and the feds find a way to finally put Capone away—on charges of tax evasion, earning him 11 years at Alcatraz.
The final scene has Capone brutally beaten by Alcatraz inmates, who are delighted to catch him without bodyguards.
Sources and content license
Source and revision history ↗ · Adapted from Wikipedia contributors, Al Capone (film). Section headings and formatting adjusted. · Content license