Following the disturbing admission by her actress sister Mackenzie that she willingly indulged in a ten-year incestuous relationship with their pop legend father, John Phillips of The Mamas & The Papas, Chynna describes her deep feelings of shock and disgust.

"Somebody could have dropped a piano on my head and I probably wouldn't have felt it," the singer, 41, reveals of the day she heard Mackenzie’s confession.

Now forced to reassess her feelings for both her sister and her father — who passed away in 2001 — Chynna reveals her sadness over how the scandal is now affecting her own children.

Chynna's husband, actor Billy Baldwin, also weighs in with some strong words about his late father-in-law and the way his wife was raised in one of Hollywood’s most troubled families.