Deadwood

The acclaimed series will be returning to HBO as a feature-length film on May 31.

In the network's highlight reel for upcoming series and films, HBO released some unseen footage from the final season of 'Game of Thrones.'

After years of discussion, HBO officially greenlit a Deadwood last July.

"It's safe enough to say it's happening this fall," star Robin Weigert revealed. "There's a set being built and tax incentives to get it done."