Tonight, Aria, Emily, Hanna and Spencer find out that "A" is not acting alone, and that his/her "helper" is closer than they think. They try to enlist Caleb's hacking skills to find out more, but Hanna is really not down with the clown. This somehow leads to a party (what is this, Gossip Girl?).

Also, expect a lot of Aria-Ezra drama, in case you weren't already.

The new episode of Pretty Little Liars, which is awesomely titled "A Hot Piece of 'A'", debuts tonight at 8 PM on ABC Family.

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