Mona-Mania!

Summary

A battle of the brains stresses Spencer, Aria learns of reasons to suspect her father of foul play, Hanna confronts Lucas, and Emily gets a fright in the woods.

Guest stars

• Keegan Allen as Toby Cavanaugh
• Amanda Schull as Meredith Sorenson
• Lindsey Shaw as Paige McCullers
• Brendan Robinson as Lucas Gottesman
• Brandon W. Jones as Andrew Campbell