Tonight's all new episode of Pretty Little Liars promises to give us answers about Jason DiLaurentis.  Last week's episode showed the girls exposing some new information about Alison's death.  But with this new information, Spencer suspects that Jason might have a lot to do with his sister's death, even if he can't remember what happened.

Spencer decides to find out the answers once and for all tonight and get to the bottom of the Jason mystery.  She breaks into his house to discover exactly what he's hiding in there.  From the trailer for the episode (view it here), it looks like it's going to be creepy.

But will Aria believe that Jason is up to no good?  She continues to grow closer to Jason in tonight's episode and the two continue with their flirting.  Is her relationship with Ezra in danger?  And what about her life?

Below are three sneak peeks for tonight's all new episode of Pretty Little Liars.  You can also read spoilers for upcoming season 2 episodes here.