Alison DiLaurentis may have disappeared to kick off Pretty Little Liars, but her presence is still very much felt on the show.

She sends her friends mysterious messages and threatens to reveal their secrets. We often see Alison via flashbacks, as she was clearly the leader of her clique.

Alison DiLaurentis Quotes

Shy in the streets, sexy in the sheets.

Ali

I'm still here, bitches. And I know everything.

A

Pretty Little Liars Quotes

Spencer: A lie gets halfway around the world before the truth has a chance to get its pants on.
Hanna: Did Ali say that?
Spencer and Mona: No, Churchill did.

Do you wanna be my friend or not? Lately, I feel like you're everybody's friend but mine.

Mona [to Hanna]