Video: Mackenzie Phillips Talks to ET

Mackenzie Phillips has ignited a media frenzy with her accusations the she had a sexual relationship with her father, Mamas and the Papas frontman John Phillips.

Her claims are the subject of her book, High on Arrival.

"There are a lot of people that won't be happy about this book," she tells ET. They don't want the truths revealed about a man who was a hero to them and some of those people are in my own family."