Fact1: Al Capone has whole city of Chicago under control, Fact2: Bureau of Prohibition agent Eliot Ness is assigned to stop Capone, Fact3: Ness throws him out of office, Fact4: Malone shoots gangster through mouth to scare George into agreeing to testify against Capone, Fact5: Wallace prepares to George from Chicago police station to safe house
Output: During Prohibition in 1930, Al Capone has nearly the whole city of Chicago under his control and supplies illegal liquor. Bureau of Prohibition agent Eliot Ness is assigned to stop Capone, but his first attempt at a liquor raid fails due to corrupt policemen tipping Capone off. He has a chance meeting with IrishAmerican veteran officer Jimmy Malone, who is fed up with the rampant corruption and offers to help Ness, suggesting that they find a man from the police academy who has not come under Capones influence. They recruit ItalianAmerican trainee George Stone AKA Giuseppe Petri for his superior marksmanship and intelligence. Joined by accountant Oscar Wallace, assigned to Ness from Washington, D.C., they conduct a successful raid on a Capone liquor cache and start to gain positive publicity, with the press dubbing them The Untouchables. Capone later kills the henchman in charge of the cache as a warning to his other men. Wallace discovers that Capone has not filed an income tax return for some years and suggests that the team try to build a tax evasion case against him, since he is wellinsulated from his other crimes. An alderman offers Ness a bribe to drop his investigation, but Ness angrily refuses it and throws him out of the office. When Capone gunman Frank Nitti threatens Ness family, Ness has his wife and daughter moved to a safe house. His team flies to the Canada–United States border to intercept an incoming liquor shipment, aided by the Royal Canadian Mounted Police, killing several gangsters and capturing George, a Capone bookkeeper. Malone then shoots a gangster through the mouth not revealing the man is already dead to scare George into agreeing to testify against Capone. Wallace prepares to escort George from the Chicago police station to a safe house, but they are shot and killed by Nitti, who has infiltrated the station. Ness confronts Capone and his men over the deaths, but Malone intervenes to save him from being killed and urges him to persuade the district attorney not to dismiss the charges against Capone. Realizing that police chief Mike Dorsett sold out Wallace and George, Malone forces him to reveal the whereabouts of Walter Payne, Capones chief bookkeeper. That night, a knifewielding thug sneaks into Malones apartment; Malone chases him out with a shotgun, but falls victim to Nittis Tommy gun ambush. Ness and Stone arrive at the apartment; before dying, Malone tells them which train Payne will take out of town. At Union Station, Ness and Stone find Payne guarded by several gangsters. A gunfight breaks out on the lobby steps, resulting in all the gangsters being killed and Payne being taken alive. As Payne testifies at Capones trial, explaining the untaxed cash flows throughout the syndicate, Ness notices that Capone seems unusually relaxed and also spots Nitti carrying a gun under his jacket. Ness has the bailiff remove Nitti and searches him outside the courtroom; though he has the mayors permission to carry the weapon, Ness finds a matchbook in Nittis pocket containing Malones address and realizes that Nitti killed Malone. Nitti shoots the bailiff and flees to the courthouse roof. Ness gives chase and in the ensuing confrontation, pushes Nitti to his death after Nitti mocks the way Malone died and remarks he will beat the rap. Stone gives Ness a list, taken from Nittis jacket, that shows bribes paid to the jurors. When the judge refuses to consider it as evidence of jury tampering, Ness bluffs him into thinking that his name is in Paynes ledger of payoffs. The judge subsequently orders that the jury be switched with one in another courtroom, prompting Capones lawyer to enter a guilty plea on his behalf; Capone is later sentenced to eleven years in prison. Ness closes up his office and gives Malones St. Jude medallion and callbox key to Stone as a farewell gift. As Ness leaves the police station, a reporter mentions a rumor that Prohibition may soon be repealed and asks what Ness will do if that happens. Ness replies, I think Ill have a drink.