Some of The Hills' cast members are becoming fed up with the way the show's producers are meddling in their lives to create drama. Now In Touch can exclusively reveal that Kristin Cavallari is ready to fight back. "After The Hills, I plan to work on many business opportunities, and I have always wanted to write a tell-all book," she tells In Touch. According to an insider, Kristin has already started writing the book, and as soon as her contract with the show is up, she'll dish all the dirt on it. "She has wanted to tell the real story before, but she wasn't allowed."