Credit: ABC Family

With so many shady characters on Pretty Little Liars, it’s hard to keep track of them all, but luckily for us, two of Rosewood’s shadiest are coming back in Season 4B Jason DiLaurentis and Noel Kahn!

“They’re going to come in and move things forward,” PLL executive producer Joseph Dougherty told TV Fanatic, adding that the remainder of Season 4 has been designed to be "a season of answers"  and that really continues in the Season 4B premiere, “Who’s in the Box?”. “We’re really changing the game,” he said.

Back in October, Wetpaint Entertainment asked Drew Van Acker about his return to Rosewood and specifically, whether or not Jason helped Ali fake her death. “I think he thinks that she’s dead,” he told us.

“I think he has always got his suspicions, but for the most part he thinks she’s dead. He was trying to find answers; he was trying to find the person who is responsible for this. But now you don’t know if she’s dead or if she’s alive or what’s going on, so we’ll see what happens when he comes back.”

As for Noel, we’re not entirely sure why this shady figure makes a dramatic return this season. We know Noel and Ezra had a rather contentious relationship, but does Noel know about Ezra’s “A” business? Will he try to help Aria this season? Brant Daugherty has been pretty tight-lipped about Noel’s return, but we’ve speculated it might have something to do with Mona.

What do you think, PLL fans: how will Jason and Noel “move things forward” for the Liars? Sound off with your theories in the comments!

Catch the Pretty Little Liars Season 4 winter premiere on Tuesday, January 7, 2014 at 8 p.m. ET on ABC Family.

Crystal Bell is an editor at Wetpaint Entertainment and our resident fangirl for all things Pretty Little Liars. Follow her on Twitter and Google+!