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

B is for bad.

Spencer

Emily: You know that A is always one step ahead of us.
Spencer: Yeah, maybe he...she...it...bitch is.