Jenna spies with her little eyes...some pretty little liars. Wait, Jenna has eyes?! That's not the only thing that's different, Alison's alive and in the flesh since this Pretty Little Halloween episode takes place before the Pilot episode in season 1.
Check out our gallery below for episode 13 of season 2 (a.k.a. the Halloween special), entitled "The First Secret":
Source: ABC Family