Two-Part Trauma

Mackenzie Phillips, who just confessed on Oprah to having been raped by her father, Mamas and the Papas frontman John Phillips, will return to the show on Friday to discuss her family's past alongside sister Chynna Phillips. Valerie Bertinelli also spilled to Oprah how "guilty" she felt during Mackenzie's drug-addled heyday for "ignoring the needs of my sister." And just in time for the announcement of her own new book! Coming up: Mackenzie's actual sister Chynna discusses her own horrifying tryst with the floppy hat of Carnie Wilson.