Spencer Pratt is giving the author thing another whirl - this time at the expense of Heidi Montag.
The 27-year-old Hills villain tells Us Weekly that he is writing a tell-all book about his estranged wife with new details about her relationship with her mother, Darlene Egelhoff.
"My last book, How to be Famous, didn't make the New York Times best-seller list because it was in the self-help section," Pratt tells the magazine. "This one is going to be totally different. I'm not holding anything back."
He did not name a publisher.
To Read More Click Here.