Season 3 Episode 12 episode 12

Pretty Little Liars Season 3 Episode 12 "The Lady Killer" Photos

Pretty Little Liars Season 3 Episode 12 "The Lady Killer" Photos

Who could have Hanna that upset? Think Caleb might have something to do with the betrAyal...or could it be Mona again? Take a stab at guessing this second 'A' in the comments!

But first, check out this bunch of promo photos for the summer, mid-season finale of Pretty Little Liars, season 3 episode 12, "The Lady Killer":

Source: ABC Family