after Garrett's body is found and just before Ali's corpse is discovered. Was he the A-team member that Aria stabbed with a screwdriver? Sarah T: I thought it was very unusual that Aria was in this life-or-death scenario! A's never come after her this hard, whereas all the other girls have dealt with murder attempts (sometimes multiple). I can't help but think that the Aria-targeting has something to do with whichever specific members of the A team were in on this plot. Which brings me to: we know Mona was on board the train wearing the same phantom costume as Caleb, and I'm willing to bet that she was the female voice we heard from Aria's perspective (the one who was arguing that they had to push the box off). But clearly she had at least one other accomplice on board, and maybe more -- the person who was wearing the joker costume, most likely a guy given the oversized fake nail clue plus the male voice arguing with Mona. I know Toby is on the A team now (perhaps as a double agent), but I don't think he was the one in the joker costume -- partly because I don't think he would beat up Spencer like that, even if he is evil (wishful thinking?) and partly because on a practical level I think that he was in some of the scenes where we simultaneously see the joker, though I'd have to go back and check. I don't really