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Spencer is devastated after finding out that Toby is on the A-team, but she doesn't say anything to her fellow liars. She is so troubled, she finally decides to hire a private detective to follow Toby and find out what the key opens. Meanwhile, Hanna discovers that Paige and Caleb are working together (with Caleb trying to scare away Mona with the brain in her locker). She follows Paige to a bar where it's ladies night, but ends up busted for underage drinking. Aria is finally forced into telling Ezra about his son, and Ezra leaves town to meet his new son. Unfortunately, it doesn't look like he has plans to return anytime soon. Emily gets an unexpected package from "Nate's" family, which includes letters she sent to Ali and Ali's biology notebook. The notebook has notes exchanged between Ali and CeCe about one of Ali's summer romances with a "beach hottie." CeCe tells Emily that Ali thought she was pregnant that summer and was too afraid to tell the "beach hottie." Emily and Aria decide to turn the notebook into the police, and Emily notices a picture of Detective Wilden at the very same Cape May that Ali spent that last summer.