Actress Mackenzie Phillips' shocking allegations she had a 10-year sexual relationship with her father have taken a new twist - his MAMAS & THE PAPAS co-founder knew all about the sick romance.
Late rocker Denny Doherty revealed all about his bandmate John Phillips' sexual exploits to his daughter Jessica Woods, who watched MACkenzie's big reveal on the Oprah show in America on Wednesday (23Sep09) and felt compelled to back up her story.
She has written to Oprah Winfrey, explaining her father knew all about the twisted romance all along.
She wrote, "I just watched the show with MACkenzie Phillips (and) tears are running down my face. Everything she said is true. My dad told me the awful truth. He was horrified at what John had done and knew all of it."
MACkenzie says, "I'm very grateful to Jessica. I never knew she knew... I don't know how Denny Doherty knew about the relationship."