Ever since the season 5 season premiere, the liars have labeled shana Fring as A? But there is one problem.
She never said she was A.
Shana showed up in a black hoodie, gloves and all, A's typical outfit. She obviously came to hurt Alison, but there is no proof she was A.
Remember when Shana was attacked by A in her car? How could she possibly be A?
1.Shana was working for Big A.
Shana was attacked. maybe because Big A had to tell her something very important to lead him/her to Ali.
2.Shana was blackmailed into being A.
This makes sense. Maybe the real A told Shana to go to NY to pretend to be A and intimidate Ali.
3.Shana wasn't A and just wanted to get back at Ali.
Shana said that Jenna told her about Alison and how evil she is. which we know is true. Maybe she wanted to just get revenge. And people usually wear all black when they are committing a murder so...
We still do not know who is A. We probably will never will until the end of the show. but at least that keeps the suspense because people really want to know who A is.
Hopefully, once we find out Bethany's killer and Mrs.D's killer, it leads us to A.