these people's break downs. >> everyone is under a microscope when you're famous and it's very difficult to manage no matter what anyone tells you in the mi midst of it. i know fame is like a tsunami. it's hard to keep your head above water. >> there was such a lust for celebrity gossip and became so competitive. it became like they were our pray. >> their number one target, britney spears. >> britney? >> we talked to people who worked inside her house who were talking about photographers climbing the trees at the neighbor's house and shooting into the backyard. it pure chaos. it starts to make her lose it like it would make anyone lose it. coming up, britney is about to lose so much more. >> she went to kevin's house and wanted to see the kids but kevin wouldn't let her in the house.