During the Arrow panel at Dragon Con 2015, Stephen Amell revealed that an element has been added to the upcoming premiere that they've never done before and it will have a major impact on the way Season 4 unfolds.

"The fundamental part of the season, that nobody is really going to understand until they see the premiere, is that we do something in the premiere that we've never done in the history of the show," Amell explained. "It does something for the remainder of the season that there's going to be a constant jeopardy in the show, even if times are good. It's a really interesting technique. I think it promotes a good story. I think it will pique people's interest."

Listen to Amell's comments in the video below.

This season sees Team Arrow facing off against Damien Darhk (Neal McDonough of Captain America: The First Avenger and Agent Carter fame) and H.I.V.E., the organization that killed John Diggle's brother. Meanwhile, Malcolm Merlyn has been promoted to the rank of Ra's al Ghul, leading to the decision to resurrect Sara Lance using the Lazarus Pit.

Arrow starts back up again on October 7 and airs Wednesdays at 8 p.m. ET/PT.