With Spencer�s possible Board Shorts revelation, she is now more determined than ever to prove her theory before bringing it to the other girls� attention � especially since it could have a devastating effect on one of the Liars. But with many sleepless nights fueled by prescription medication, Hanna starts to notice Spencer�s odd behavior. Will Detective Hanna be able to figure out Spencer�s secret before Spencer is ready to share? Meanwhile, Emily looks to make amends with Alison through Shana, and all of Aria�s lies start to take a toll on her.