Spencer (Troian Bellisario) doesn't seem like herself in this clip from this week's episode. You'd think she'd be thrilled to celebrate her anniversary with Toby (Keegan Allen). What do you think happened? Will Aria (Lucy Hale) and Hanna (Ashley Benson) figure out what's wrong?
Catch an all-new episode of Pretty Little Liars on ETC this Saturday at 8pm.