But why would Voldie have it in the first place?

I dont' even think that Voldie knows about it... It's not like he was in the back of Barty jr's head like he was with Quirell, Barty woul dhave to specifically tell him about it, and I dont'think that they really had that much contact. I think Voldie would ahve given him the job, and left him to do it. After all, it's not like even if Voldie had a body he could just show up a Hogwarts and ask to talk to someone!!!
I think that Moody (real one) will find it, and will either give it to Harry because it's got to do with his dad, or give it to DD, who will give it back to harry for the same reason!
