In a very disturbing interview with Larry King, Mackenzie Phillips talks about her incestuous relationship in the late 70s and 80s with her father John Phillips, founder of the band the Mamas and the Papas. Mackenzie appears upset, but composed when talking about the traumatic experiences, and the Believability Meter backs up her story.

Which is important because both Mackenzie's sister and stepmother have accused her of lying about the relationship. When Mackenzie says she became preganant and did not know who the father was, her father paid for an abortion, and she "never let him touch [her] again." Do you think anyone would make up such an awful story just to sell books?