So far in the snippets from Dr Phil, we learned it was Libby's sister that dropped them off. Libby's Daddy went to pick them up!! He called to say he was near, and didn't get an answer. It must have been known they were going to the bridge, because her Daddy went to the bridge, still couldn't find them, so he called the Grandma who in turn called the Grandpa. I don't think we knew any of that before now. I don't think it will help solve this case though. Isn't it the first time we've heard about Libby's Dad?