Hollywood has always loved a good gangster tale, but for every Godfather or Untouchables, there's a misfire that makes you wonder how so much talent went so wrong. Ruben Fleischer's Gangster Squad is one such cautionary tale. Arriving on Prime Video in September 2026, this 2013 flop is a fascinating train wreck for fans of Ryan Gosling, Emma Stone, and Sean Penn.

With a hefty $60 million budget, a cast that could headline three separate blockbusters, and Oscar-winning cinematographer Dion Beebe behind the lens, Gangster Squad had every ingredient for success. Instead, it delivered a hollow, lifeless picture that critics tore apart and audiences largely ignored. Thirteen years later, it stands as one of the most disappointing outings for its A-list stars.

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What Went Wrong?

The film follows a group of LAPD officers in 1949, led by Josh Brolin's Sergeant John O'Mara, as they take on real-life mob boss Mickey Cohen, played by Sean Penn under layers of prosthetic makeup. Ryan Gosling and Emma Stone are cast as star-crossed lovers caught in the crossfire, but their chemistry is wasted on a script that gives Stone little more to do than look glamorous and warn Gosling of danger.

Director Ruben Fleischer, best known for Zombieland, tries to channel Brian De Palma's stylish crime epics but ends up with a pale imitation. The action scenes are muddled, the dialogue is clichéd, and even the violence—which drew criticism at the time—feels tame and uninspired. The cast, including Giovanni Ribisi, Anthony Mackie, and Michael Peña, are all wasted in thankless roles.

A Missed Opportunity

The real Mickey Cohen's story is a wild ride of mob intrigue and political connections, but Gangster Squad reduces it to a generic good-vs-evil shootout. The film's climax, a fabricated showdown, feels ripped from a lesser Untouchables knockoff. Even Penn, who brings manic energy, is given little to chew on beyond shouting and brooding.

For fans of great action movies, Gangster Squad is a reminder that star power can't save a weak script. It's a film that's almost worth watching as a case study in what not to do with a big budget and a talented ensemble.

If you're curious to see Gosling and Stone at their most sleepwalking, or just want to marvel at a rare miss from epic filmmaking, catch Gangster Squad on Prime Video this September. Just don't expect a classic.