Michael Mann’s Public Enemies is based on Bryan Burrough's non-fiction book, Public Enemies: America's Greatest Crime Wave and the Birth of the FBI, 1933–34, although “it’s not 100 percent historically accurate” as Burroughs told Vanity Fair. The film tells the story of the last year in the life of notorious American bank robber John Dillinger (Johnny Depp). Out of all the crimes committed, the most egregious turns out to be the theft of the audience’s hard-earned cash because the filmmakers deliver such an extremely boring product.
After breaking some colleagues out of jail in 1933, Dillinger naturally goes back to doing what he does best: robbing banks with his gang. The FBI takes an interest in the Midwest crime wave, in part so the agency can continue to make a name for itself. Director J. Edgar Hoover (Billy Crudup) assigns Agent Melvin Purvis (Christian Bale), who recently ended Pretty Boy Floyd’s criminal career, and sends him off to Chicago to work with a group of novice agents.
Dillinger is both crafty and lucky as he evades the dragnet for a time. However, by drawing the feds to Chicago, he gets on the wrong side of local gangster Frank Nitti, who wants to see Dillinger disappear more than Purvis does. Their mutual interests result in a fateful night outside Lincoln Park’s Biograph Theater.
Public Enemies fails on a number of fronts and its two-hour-plus runtime accentuates them. The screenplay and the film should have cut scenes that repeated ideas without moving them forward as well as a few others that were simply forgettable.
One major problem is neither main character is worth rooting for, and some of the fault is because both lead performances are so subdued they border on being flat. Dillinger is shown to be bold and brash, taking what he wants, like coat-check girl, Billie Frechette (Marion Cotillard) who becomes his girlfriend. However, their romance creates no sparks on screen. Purvis suffers from a similar recklessness in pursuit of Dillinger, yet he hardly registers much emotion when his decisions cause his men to be killed.