Pretty Little Liars season 6
The popular teen thriller jumps five years forward after A's identity revelationABC Family

Pretty Little Liars season 6 summer finale ended with big A revelation, but fans were not happy to accept CeCe as the transgender A who went on to ruin the lives of Alison, Aria, Spencer, Emily and Hanna with no concrete reason.

However, show creator Marlene King has teased the killer of Jessica DiLaurentis as a part of a huge mystery and will come to hunt the girls as they try to forget their traumatic past.

"You will find out who killed Mrs D and that's a part of the larger mystery that we have to tell," King told MTV.

She also teased that A's story is over, but a big bad is coming to ruin the lives of the girls who possibly is much more dangerous that Charles.

"This A story is done. There is a new big bad, but this A, Charlotte, is done. There is a new Big Bad," she explains.

Meanwhile, ABC Family has released the trailer of the PLL season 6 winter premiere, which leaps five years forward and shows that the girls are back in Rosewood to celebrate their reunion.

An elated Spencer says "I miss your faces!" to her friends. Alison is married and is working as a high school teacher. She is also trying to establish a relationship with her sister Charlotte aka CeCe.

The teaser turns creepy when Mona then reappears, asking Spencer whether she still has nightmares and Emily appears terrifying in a graveyard.

Horror appears to be back in Rosewood after the girl's reunion and this time they have to deal with a much more dangerous psychopath than Charles.

After a disappointing A reveal, it will be interesting to Pretty Little Liars season 6 winter premiere.