Before Aria can bore Emily even more than she already is, they overhear Caleb yelling at his mysterious interlocutor right there in the middle of the quad. The conversation is vague enough that it sounds like some girl yelling at him for dating Hanna also, and him yelling back for always calling him even though he is taking advantage of Hanna's hospitaliano. The best lines here: "First of all, I don't think she's who you say she is... Don't call her that!"
The ladies take this latest dropping of eaves straight to Hanna; she sticks her fingers in her ears and goes la-la-la so forcefully that it's a little intimidating. At one point she's like, "We bared our souls before we bared our other stuff; he told me about Flagstaff, I told him everything too." Spencer makes a fist, but Hanna's like, "Not everything, duh. Not how we blinded that girl or anything, just like about Fat Camp."
The lights dim and zap, black ooze drips down the walls, a throbbing on the edge of sound, and that's when Jenna comes tap-tapping in there wearing the owl pendant. What to do. Hanna goes into a tailspin, of course, and Emily starts threatening Caleb's life, awesomely, but Caleb is nowhere to be found. Hanna is going to lose her marbles!
Speaking of cheating that isn't actually cheating, Emily overhears some Mona-type girl congratulating Paige on landing the impressive catch that is Sean Ackard. The girls just love Sean Ackard! That dull stare, that violence-prone homoerotic vibe, that gleaming chastity belt locked 'round his nethers. Sean Ackard has got it going on.
Ella sees Aria texting madly and refuses to get closer to it, and then a bit down the way there's Jenna creepily typing on her computer with the owl around her neck. (I was all excited to see how Jenna uses a laptop, but I still don't know how all that works. I assume there's a trick to it, because she is blind, but if there was I missed it.) Spencer thinks about starting some shit with her, but just as she's walking over there Jenna removes the own and takes it apart, revealing that it is a flash drive. She inserts it, after finding the port with her blind fingers, and Spencer is like "Whaaa the fuuuu..."
Algebraically speaking, the girls decide, C + J = X, where C = Caleb and J = Jenna and X = A. From this we can possibly determine that Jenna was telling Caleb about "214," in which case it's still something and the whole motel room thing was just an insane coincidence/particularly bizarre mindfuck courtesy of A.