Jerry Oppenheimer is an American author who has written several unauthorized biographies of public figures including Hillary and Bill Clinton, Anna Wintour, Rock Hudson, Martha Stewart, Barbara Walters, Ethel Kennedy, Jerry Seinfeld and the Hilton family.
Excerpt from Wikipedia, available under CC BY-SA 4.0.

Madoff with the money
2009
ISBN 9781282369672
Toy monster
2009
ISBN 9780470371268
The Kardashians
2017
ISBN 9781250087140
House of Hilton
2006
ISBN 9780307337221
The other Mrs. Kennedy
1994
ISBN 9780312110406
RFK, Jr
2016
ISBN 9781250096661
The Other Mrs. Kennedy An Intimate and Reevaling Look at the Hidden Life of Ethel Skakel Kennedy
1995
ISBN 9780312956004