AceShowbiz -

HBO has finally debuted the first trailer for "Boardwalk Empire" season 5 following some teasers. The video, set to The Killers' "Tranquilize", shows that changes are coming as the show jumps ahead to 1931, during the Great Depression.

It appears that Lucky Luciano proposes a new way of doing their business. Nucky makes a death threat to someone over the phone, saying, "I will not rest until I see you in your graves." A shot of young Nucky is also featured, while Nelson Van Alden is seen in "Most Wanted" flyer and being held at gunpoint.

The fifth and final season of the period drama will premiere Sunday, September 7 at 9 P.M. on HBO. Series creator Terry Winter promised "a powerful and exciting conclusion" when announcing the show's cancellation in early this year. He also said in an "Invitation to the Set" video that the series would explore Nucky's childhood and feature the young version of people around him.