"Pretty Little Liars" star Keegan Allen says he already figured out who "A" is, and fans probably could too! Allen, who plays Spencer Hasting's (Troian Bellisario) boyfriend Toby Cavanaugh, told People magazine that he has the scoop on "A's" real identity, but of course he couldn't spill the beans.

However, the 25-year-old teased that it's really easy to figure out and fans could guess the stalker's identity by paying close, close attention to the episodes.

"I do know who it is," Allen said. "And what I love about who it is is that everyone knows who it is... but it will be so shocking and surprising."

"Everyone will freak out  because it's so clearly in every episode," Allen continued. "When it's finally revealed, you could literally go back to Season 1 and knowing who it is, you can be like, 'Oh, wow. Whoa. This has been here all along, and I never noticed it,' which is, I think, brilliant."

Marlene King, creator of the ABC Family series, previously said that the true identity of "A" would be revealed before Season 7 kicks off.

"I thinks fans got a little worried when they found out that we were going seven seasons, because they thought maybe they're going to have to wait that long to find out who 'A' is, but I am promising you that you don't," King said. "The identity of Big 'A' is going to be revealed before season seven starts."

Ashley Benson (Hanna) and Bellisario also know "A's" real identity. Shay Mitchell (Emily), Lucy Hale (Aria) and Sasha Pieterse (Alison) said they had no idea who the stalker could be.