A buys Melissa's wedding ring from that pawn shop, of course.
So what's all happening? Aria/Anita has pissed off Jenna once again, which is always scary; Jackie Molina is hip to her May/August love, also. Melissa has secrets aplenty with Wren, Jason and possibly Ian; her wedding ring now belongs to A. Hanna's doing a Parent Trap in the creepiest, most PLL way possible, and also involving herself in Lucas and Caleb's life. Alison once had a bad night that involved threatening her brother's finances and possibly also Ian. And Emily did the right thing, which can never happen in Rosewood, so A defrauded everybody on her behalf to fix it. Yeah, it's about time for everything to flip over again, which makes sense that this episode was so bizarre.
Next week: Noel Kahn fills an entire bed and breakfast with sunflowers to make it up to Mona Vanderwaal; Caleb and Lucas start a home improvement cable-access show starring their next-door neighbor, who has only half a face; Jenna and Garrett kidnap Aria and force her to watch Douglas Sirk movies until she apologizes, costing her a semester's Ceramics credit; Emily ironically loses the ability to swim; Hanna roofies her parents.