The quest for A is going full-swing in "Pretty Little Liars" season 6 as the liars unearth more information about their tormentor. Clues point to Charles DiLaurentis, earlier revealed to be Alison and Jason's older brother. Charles was kept in Radley Sanitarium when he was 16 for being mentally unstable and dangerous. 

Interestingly, the DiLaurentis patriarch believes that Charles committed suicide, but until the girls see his remains — they also attempted to look for his grave — there is reason to believe that he is not dead, thus he isn't off the hook. 

In episode 5 titled "She's No Angel," Hanna and the group go to Radley. The facility is now shut down but they find the need to investigate for themselves what really happened to Charles. 

As the girls step inside the facility, they find bathtubs filled with water and a girl is inside one and even dances across the room. However, the girl, portrayed by "Chandelier" dance star Maddie Ziegler, only interacts with Spencer.

Hanna and Spencer eventually discover that someone was in Radley long enough to know about Charles. According to Melty, the pair is either referring to the girl in the black hoodie, who Sara said she spotted once, or Sara herself. Does Sara have something to do with A? 

On the other hand, Mona will also return in this episode, and she comes back with fear that Alison and the police are onto her. She turns to Hanna, who tells her that with A still at large, Alison is the least of her worries. Besides, the authorities are also focused on capturing the liars' tormentor. 

"Pretty Little Liars" season 6 episode 5 titled "She's No Angel" will air on June 30.