When does Boardwalk Empire return?

Boardwalk Empire is a period drama focusing on Enoch "Nucky" Thompson, a political figure who rises to prominence and controls Atlantic City, New Jersey, during the Prohibition period of the 1920s and 1930s. The pilot episode was directed by Martin Scorsese and produced at a cost of $18 million. The series premiered on September 19, 2010, and its five-season run of 56 episodes ended on October 26, 2014. It received 57 Primetime Emmy Award nominations, winning 20.