Season 1, Episode 37 Brain Drain

First Aired: June 11, 2010

Fanboy gets amnesia, leaving Chum Chum vulnerable to Yo's attempts at friendship.

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I. Marlene King and Troian Bellisario
Troian Bellisario recalls her wildest PLL fan encounters

The Pretty Little Liars star and creator recall their wildest -- and sometimes incredilbly uncomfortable -- encounters with fans