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Spencer borrows some of Ezra's spy tools, and Emily's mom invites Ali to dinner. Meanwhile, Aria does a little volunteer work at a mental hospital and crosses paths with an aggressive patient. Ali clashes with Caleb, which makes things awkward for Hanna.
After Caleb comes back to Rosewood, he determines whether staying is the right thing to do. Alison is feeling awfully scared and considers leaving Rosewood for her safety, but the girls need her there in order to protect her. Ezra commits to finding answers through research of the past and present.moreless
Alison distrusts her family, but she must reside with them. Offhand, the girls adjust to Alison's return; recent occurrences trouble Aria; and questions surface when Mrs. DiLaurentis can't be found.