IIRC the "real" Zanny that police recently talked to actually did fill out the guest card at the apartments. So I can't imagine the ID theft part. If that is the case (that Zanny did fill out a card), then I'm sure it was something like Casey saw her and went in after or something like that, to come up with a cover story. If I am recalling this incorrectly and the "real" Zanny did not actually admit to going to those apartments, then it could be ID theft and Casey could have filled out the card as Zanny just to start her pack of lies. Have any of the friends or anyone outside of the immediate family indicated they ever heard of "Zanny" before the disappearance? And has the family actually said they heard the name "Zanny" before the disappearance? I know there was a lot of talk about Zanny = Xanax, but with the possibilty of an actual Zaneida filling out the guest card, and IF the family and/or friends honestly did hear "Zanny" before the disappearance, IF that is all true, I don't buy the Xanax or the ID theft theories. It all just seems to be too much of a coincidence. I am not saying that any Zanny was ever her babysitter, but Casey had to come up with the name somehow! I, of course, could be completely confused as to what has been stated because there has been so much going on that I can't keep anything straight!!