03/19/2012 06:21 pm ET

'Pretty Little Liars' A To Z: Everything You Needed To Know Before The Season 2 Finale

On the Season 2 finale of ABC Family's hit series "Pretty Little Liars" (Mon., March 19 at 8 p.m. ET) viewers will finally find out the answer to the biggest question of all: Who is A?

The reveal has been two years coming and though the extortionist texter -- with a penchant for saying "bitches" -- clearly has staked his/her/their claim on the first letter of the alphabet, what about the other 25?

From Byron to Caleb and all the way through Z, catch up on all things "Pretty Little Liars" in the slideshow below before the finale opens up a whole new host of questions for fans to think about until the third season of "Pretty Little Liars" kicks off in June.