incredible. a best friend turned enemy. >> a gentleman who was a friend of ours for a long time has taken everything. >> reporter: hundreds in desperate pursuit of one teen in grave danger. >> the amber alert was on and i see a picture of this blonde haired girl. i said, that's the girl we seen up on the mountain. >> reporter: kidnapped. the rescue of hannah anderson. it was going to be a normal summer weekend for the andersons. pop warner football for 8-year-old ethan. cheerleading practice for 16-year-old hannah. a road trip with the dog and mom christina to jim dimaggio's house. he had been asking the andersons to visit for sometime. >> we're getting together for some type of family gathering. >> bill gore is san diego county sheriff. >> jim led people to believe he was going to be losing his house