'Boardwalk Empire' Trailer: Sneak Peek At Season 4 Brings 'Power' Into Question (EXCLUSIVE VIDEO)

There's a brand-new, action-packed "Boardwalk Empire" trailer coming your way.

The new look at the upcoming explosive season of the HBO gangster drama will premiere on Saturday, August 10 at 9 p.m. ET, just before the debut of Larry David's "Clear History," which co-stars "Mad Men's" leading man Jon Hamm.

But HuffPost TV has an exclusive first look at the upcoming "Boardwalk Empire" trailer in a Vine that features a stoic Nucky Thompson (Steve Buscemi), someone falling from a building, plenty of guns and "Boardwalk" newcomer Jeffrey Wright's Dr. Arnold Narcisse, a doctor of divinity who controls Harlem, asking, "Do you know what power is?"

Check out the sneak peek of the "Boardwalk Empire" trailer for Season 4 below:

Tune in for the full trailer of "Boardwalk Empire" Season 4, debuting Saturday, August 10 at 9 p.m. ET. And tune in for the the season premiere on Sunday, September 8 at 9 p.m. ET on HBO.

"Boardwalk Empire"