'Pretty Little Liars' Episode 3.15 Photos: 'Mona-Mania!'

Aria, Emily, Hanna and Spencer are sure that Mona is up to her old tricks again, but can they prove it? "Mona-Mania!" airs Tuesday, January 15 at 8pm on ABC Family.

Set a reminder by adding Pretty Little Liars to your personal Watch-List on the free BuddyTV Guide app.



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