'Pretty Little Liars' Season 5 Spoilers 'Big A' Revealed: Keegan Allen Says Lucy Hale, Ashley Benson and Shay Mitchell Know Villain's Identity

It has been the age-old question Pretty Little Liars fans have been dying to know for the last five years: Who the heck is "A"? Well, you better sit down for this news, because it seems like your favorite stars of the ABC Family series have been doing what they do best and lying to you when they say they have no clue who the hooded villain is. Star of the series Keegan Allen revealed that co-stars Ashley Benson, Troian Bellisario, Shay Mitchell and even Lucy Hale are all aware of the Big Bad's identity.

According to MTV, it has already been revealed that fans will be learning the true identify of Big "A" before the start of Season 7, but when the music network sat down with Keegan, they learned he is already a season and a half ahead of fans with the answer.

"I think everyone knows, but we all have this pact where we don't want to tell anybody because we love the collective mass of people freaking out," Allen explained. "It's part of the show."

While we can't wait to find out who "A" is, Keegan said the clues have been there since Season 1, and a true fan will know who the villain is if they have paid extra close attention.

"If you go all the way back to Season 1 ... and you really pay attention to every clue, you can figure it out," the star explained, adding, "It all makes total sense."

Despite telling the site that everyone on the cast knows who "A" is, fellow actor Cody Christian, who plays Aria's brother, told People that he didn't know, saying he was going to have to ask Keegan about it.

"No! I'm going to have to give him a call and tell him to spill the beans, because I don't," the star said of Allen knowing Big "A's" true identity.

Maybe Christian rang up Toby to get the 411?

Image courtesy Facebook/"Pretty Little Liars"