Madison, one of Hefner's three girlfriends who went on to become the stars of reality show The Girls Next Door, has opened up about the years she spent at the Playboy's mansion in California in her new book, Down the Rabbit Hole: Curious Adventures and Cautionary Tales of a Former Playboy Bunny.

A statement promoting the tome from publishers Harper Collins reads: "Life inside the notorious Mansion wasn't a dream at all - and quickly became her nightmare. After losing her identity, her sense of self-worth, and her hope for the future, Holly found herself sitting alone in a bathtub contemplating suicide."

And Madison says, "I'm excited to finally share my story and what I've learned from my personal experiences both inside and outside of the Playboy Mansion. I think my stories will surprise people and I'm looking forward to lifting the veil of mystique and clearing up the misconceptions so often associated with my life."