Is it possible to find any one more dangerous than CeCe Drake's (Vanessa Ray) "A" who will threaten the Liars' lives in "Pretty Little Liars" season 6B?

During the panel appearance of "Pretty Little Liars" executive producer I. Marlene King and the cast at the 2015 New York Comic Con, it was revealed that a new big bad will start tormenting the lives of Aria (Lucy Hale), Spencer (Troian Bellisario), Hanna (Ashley Benson), Emily (Shay Mitchell), and Alison (Sasha Pieterse) when the series returns early next year.

"The new big bad — I won't say if it's a he or a she. We think it's a he right now, but you never know," the executive producer exclusively told Hollywood Life during the 2015 NYCC earlier this month. "But the new big bad is more lethal. The new big bad isn't playing a game. The new big bad has an agenda and will not stop at anything before that agenda is taken care of."

The second half of "Pretty Little Liars" season 6 will begin five years after the event during the summer finale, when they found out that CeCe is actually Alison's older brother Charles, who had been tormenting the Liars as "A" after Mona (Janel Parrish) was caught. The girls then went on their separate ways for college while Ali decided to stay in Rosewood.

In season 6B, Aria becomes a publisher, Hanna becomes a fashion designer, Spencer becomes very successful in Washington, D.C., Emily turns out to be a bartender, while Alison got married and works as a teacher in Rosewood High School. But the Liars will have to be reunited again because of Alison needs help in her petition to let CeCe out of prison. Could this mean that she will no longer be a threat to the girls?

"I think everyone's a threat. Everyone's a suspect in the show, always," King revealed.

"Pretty Little Liars" season 6B starts on Tuesday, Jan. 12, 2016, in the newly renamed Freeform channel.