No one has heard of Mackenzie Phillips and her brood for a long time but suddenly, she’s back in the limelight. She released a memoir this week, where she claims that she had an incestuous relationship with late dad, John Phillips. Those from the older generation would associate that name with the group The Mamas & The Papas. Mackenzie’s stepmoms all deny her claims, while her sister Chynna thinks it’s true. To her credit, Mackenzie has caught Oprah’s attention.