Jenna Marshall is A.D

Jenna could've easily been A.D. Throughout the Pretty Little Liars television series, Jenna has been blind. She has known Charlotte Drake forever. Jenna hasn't been blind since "Eye of the Beholder" when Jenna had an operation on her eye. Jenna has been sneaking around ever since then. Whenever the liars were seeing her making a call it was usually to Charlotte Drake to keep her informed about the liars; or it was to Archer Dunhill. The reason why she is A.D is because she wants to get revenge to the five liars that made her blind in the first place. (Alison DiLaurentis, Aria Montgomery, Emily Fields, Hanna Marin and Spencer Hastings.)