Revenge's Emily Thorne spent her adult life seeking retribution for the tragedies of her past, but now a whole new crime will reawaken quest for vigilante justice in season 4.

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David Clarke (James Tupper) may be back in the Hamptons, but Aiden Mathis (Barry Sloane) is gone for good. Poisoned and suffocated by the malicious Victoria Grayson (Madeleine Stowe), Aiden's character needed to land 6 feet under in order to help fuel Emily's burning desire for revenge (see video below).

"We thought the best thing to do is make [Emily] understand what revenge is in a very different way," explained executive producer Sunil Nayar, according to E!. "It's one thing when you are a young girl and you lose your father and you have this idealistic sense of who he was and therefore you might idealize the sense of what you have to do to get him justice, but when you lose the man that you love, the love of your life with whom you plan on spending your life at the hand of the woman you hate more than anybody, it's a much more mature kind of anger that I think will inform how Emily will go about doing what she does in season four differently."

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Fans have become accustomed to seeing Emily fight a vendetta on behalf of her father, but now the tables have been flipped. David is breathing where Aiden is not, and it looks like Emily will have to completely redraw her battle plans.

Revenge will return to ABC this fall.