Mackenzie Phillips makes new claims about father's alleged abuse

For decades, Mackenzie Phillips said she lived with the pain of not being believed about her late father, John Phillips.

Then an unexpected letter landed in her hands – and changed everything. Phillips opened up about a stunning letter from a longtime family friend that corroborated her claims of abuse by her late father during an episode of Valerie Bertinelli's podcast, "Get Naked."

Phillips recalled receiving the letter while working at Breathe Life Healing Center.

MACKENZIE...