HBO's "Game of Thrones" showrunners are teasing the biggest final in the show's history this Sunday.

The last episode of season four is titled "The Children" and will be 66 minutes long. If you were expecting a more quieter finale after the grand battle at Castle Black, you'll be in for some disappointment.

"It's the best finale we've ever done, bar none," Thrones showrunners David Benioff and Dan Weiss said in a statement. "The performances from our cast, the direction from Alex Graves, the VFX work, the new [music] cues from Ramin Djawadi-all of it came together in perhaps the finest hour we've produced. We're immensely proud of 'The Children.' And a little intimidated by the episode, because now we have to get back to the business of season five and figure out a way to top it."

The final episode of the series is expected to reveal Tyrion's date after being found guilty of King Joffrey's murder and whether Jon Snow will kill Mance Rayder. Actor Kit Harrington discussed Jon's future to the Daily Beast.

Harrington explained that with the death of Ygritte, Jon turns cold and no long has anyone testing his emotions.

"He's always been searching for validation-some kind of validation of who he is, being a bastard, and he proves himself somehow," Harrington told The Daily Beast. "But the longer it goes on, the less it is about him wanting to prove himself, and the more it's just about him wanting to do what needs to be done. That's the person he's turning into. He's losing his ambition and is discovering that life isn't really about being the hero, it's about surviving and doing right by the people you love."

"Game of Thrones" seasons four finale will air on HBO Sunday, June 15 at 9 p.m.