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

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

A

Friends share secrets. That's what keeps us close.

Alison

Pretty Little Liars Quotes

We made a pact Emily. A is finally dead and we were all ready to get back to our lives and now we're on Planet Alison.

Spencer

Spencer: Senior year is supposed to be best year of life, did you know that it?
Emily: Yeah, if you survive it.