Fans are anxiously the premiere of "Revenge" season 4 following the season 3 finale, when we found out that Emily's (Emily VanCamp) dead father, David (James Tupper, who has been given the role of a series regular), has been alive and in hiding this entire time.

According to E! News, during a chat with producers Gretchen Berg and Aaron Harberts at the 2014 ATX TV Festival in Austin, the two discussed some major spoilers including ABC's bold decision to bring David back from the dead.

Berg explained, "The show had reached a point where it was collapsing in on itself because with the Initiative, we tried to go bigger."

She added, "It didn't seem to work as well, it didn't feel intimate, so we were running out of people for revenge and unless we were able to turn the show on its ear and make a big, big splash and change...it made it exciting for all of us to move forward."

We will see a big change in Emily seeing as she finally completed her goal of exacting revenge on the Graysons.

Harberts admitted, "It's Emily's time to realize she did this in the name of her father, was that the right thing to do? Is he happy about that or is he disappointed? It's going to be a father-daughter relationship season.

"The character of Emily is so central to the show and after three years of exploring her through that lens of revenge, the staff was like what new element in can come into her life that will shake her up completely and allow us to force Emily to find out who Amanda is and we realized it's her father."

Harberts went on to say, "Bringing David back, he's the one character out there who could really push a lot of her buttons. For us, we're always looking to do new dynamics and find something new."

Revealing a major spoiler Berg previewed, "The drive of season four will be Emily discovering who Amanda Clarke is and Emily figuring out her new life with her father in it. I don't want to say when she's going to discover it that, but that's going to be our arc for the season."

However, let's not forget that David's return from the dead will have a big impact on Victoria as well. Harberts teased, "When Victoria discovers that David is back, is her first reaction terror because maybe he knows that she betrayed him?"

Berg added, "What did David know? What is he aware of?"

With David back, Victoria could use him to get her revenge against Emily who had her committed to a mental institution at the end of the season 3 finale, where she finally discovered the pretty blonde's real identity.

Harberts said, "He may not be the most emotionally and psychologically stable and if Victoria is the first person to get to David, she might be in control of that guy, which sort of presents her power running through the season."

Meanwhile Berg said Emily and Victoria will engage in "a fun race to David."

"Revenge" season 4 will premiere on ABC on Sunday, September 28th.