Gangster James 'Whitey' Bulger is the most fear criminal in the United States. He's also the most wanted gangster in American history. The latest teaser trailer for Black Mass offers just a hint at what makes the man so bad. Johnny Depp fully transforms into the notorious killer in director Scott Cooper's drama, which will surely bring an Oscar nomination for both men next year.

In Black Mass, we return to 1970s South Boston. FBI Agent John Connolly (Joel Edgerton) persuades Irish mobster James "Whitey" Bulger (Johnny Depp) to collaborate with the FBI and eliminate a common enemy: the Italian mob. This true story retracts the unholy alliance, which spiraled out of control, allowing Whitey to evade law enforcement, consolidate power, and become one of the most ruthless and powerful gangsters in Boston history.

From Warner Bros. Pictures, Black Mass also stars Dakota Johnson, Jesse Plemons, Juno Temple, Benedict Cumberbatch, Kevin Bacon, Corey Stoll and Peter Sarsgaard. Check out the latest footage, which has James 'Whitey' Bulger dispensing some of his chilling gangster knowledge to a young boy at the dinner table. Then be sure to mark your calendars for September 18, because you don't want to miss what is sure to be one of the most captivating films of the fall:

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