Fantastic movie, I suggest people google Al Capone and do a little research before watching. It's a very intense physiological thriller. It's a mix of The Godfather, Scarface, The Shining, The Sopranos and a touch of my favorite Tom Hardy show Taboo.
It's funny and violent with a great cast. It's about trust and deceit of the final year of Al Capones life. Tom Hardy puts in another Oscar worthy performance. I'd like to share more but that would spoil it for people who haven't seen it yet.