it was Alison with a wig on :L Ali pretended to be a separate character, Vivian, in order to be able to sneak around and do certain things with her "boyfriend" Ian Thomas. Also Ali wanted to become someone else in order to sneak around without "A" knowing, under their radar.
That one guy that knew Vivian
Vivian is Ali's alter ego, who she normally uses to sneak around and attempt to figure out A's identity.
I'm pretty sure its Melissa... She admits it in I think the second season. Or it could be Ali pretending to be vivian.
Pretty Little Liars!
there's no Louis in pretty little liars.
there is not a new pretty little liars book
No, Spencer from Pretty Little Liars does not die.
Ezra did not die on Pretty Little Liars.
No one there is no trisa on pretty little liars
The books in the Pretty Little Liars series are:Pretty Little LiarsFlawlessPerfectUnbelievableWickedKillerHeartlessWantedTwistedRuthlessStunningBurnedCrushedDeadly
Mona crashed into Hannah in Pretty Little Liars.
Pretty Little Liars was created on 2010-01-01.