umm, how can the stalker be Zoe when she was taken away by the stalker in Friday's episode. I at first agreed with you that it was Zoe but now I am not too sure. I think it could be Josie.
A lot of people are saying Zoe set it up by acting out on the telephone, leaving blood etc and is in hiding - making everyone believe the stalker has her... but i think it is Dan, he is the only one uncounted for! And apparently the stalker has a disease or disorder, so they don't even know what they are doing.
Zoe has been on the show since January... yet she still isn't in the credits, and people that arrived this month have made the credits, so if Zoe isn't the stalker she definitley is dead.