Levi Johnston Will Reveal All

Levi Johnston, 20-year-old father of former Republican vice presidential candidate Sarah Palin's grandson and a one-time Playgirl nude model, confirms he will write a tell-all book about his relationship with the Palin family, according to People magazine.

The memoir, titled Deer in the Headlights: My Life in Sarah Palin's Crosshairs, is scheduled for a fall release from Touchstone Publishing.

"I want to tell the truth about my close relationship with the Palins," Johnston says via a statement released by the publisher. "My sense of Sarah and my perplexing fall from grace - how I feel and what I've learned."

Johnston adds: "I'm doing this for me, for my boy Tripp and for the country."