While "Pretty Little Liars" fans still have a few months before the return of Season 6B, recent spoilers may have given us the puzzle pieces to determine Mrs. DiLaurentis' killer.

Recently, "Pretty Little Liars" showrunner Marlene King disclosed some spoilers about the new Big Bad of 6B. According to MTV, the catalyst for the new threat is none other than a new dead body.

"This Big Bad has an agenda and it's to find out why this person passes away-and to seek revenge on the person responsible," said King.

The dead person in question could the hanging mystery of Mrs. DiLaurentis's murder, while others have theories that it could be someone else, like Charlotte aka Cece formerly known as Charles DiLaurentis.

One of other major "Pretty Little Liars" Season 6B theories is that Mrs. D's killer, the new dead body's killer and the Big Bad could be the same person, despite the new Big Bad's mission to seek revenge.

But others disagree.

"We used to think so but after the latest interview this kind of changed, because it was confirmed that this new Big Bad thinks the liars killed Charlotte and is avenging her," commented reddit user Covermaker. "It means that we have two parallel mysteries: Who killed Charlotte and who is Big Bad?"

While the identity of Mrs. D's killer is still wrapped in mystery, some "Pretty Little Liars" fans have strong theories and suspicions that it could be a Hastings.

"I've re-watched 'A is for Answers' recently and the clues to Mrs. D's assailant are all there," commented PLLmademeripmyscalp. "All roads lead to the Hastings household. All three Hastings were there in that episode so either Peter, Veronica or Melissa murdered Jessica. Melissa is the likeliest candidate to have gotten her hands dirty."