In the book, Hunter claims she was not the only mistress Edwards had. It also includes her views on Edwards' parenting of their daughter Quinn, and descriptions of Elizabeth Edwards' outbursts.
It also details a conversation she had with Edwards as federal prosecutors began their case against him. He told Hunter that if he went to prison, it would likely be a low-security prison in Virginia and would be more like a country club than a jail.
The only low-security federal prison in Virginia is in Petersburg, where former Washington, D.C., mayor Marion Barry once served time.
At the end of the book, Hunter admits she still has romantic feelings for Edwards but doesn't know how their relationship will turn out. The memoir will be released next week.
Edwards' six-week trial ended as a mistrial last month. Jurors acquitted Edwards on one count of accepting illegal campaign contributions and were deadlocked on five other felony counts. Federal prosecutors have since decided not to retry him, and the charges were dropped.
The Associated Press contributed to this report.