Mary Higgins Clark | Novelist | $140 Million

Mary Higgins Clark is considered one of the greatest authors in the mystery and suspense genre. She has published 51 titles throughout her career, all of which have become bestsellers in the United States and in many European countries. With that said, it’s safe to say that her $140 million net worth is certainly well-earned. In fact, she once even received a $64 million advance payment for a total of four books – goes to show how highly she was regarded amongst peers and audiences in the business.

Besides earning a fortune from her written works, some of which were later adopted on both the big and small screens, Mary also had investments in sports, for the NFL’s New Jersey Jets, to be precise. Unfortunately, by 2020, the much-beloved suspense author passed away at 92 years old. Her legacy lives on through her two daughters, Mary Jane and Carol Higgins, who are now suspense and mystery writers, too.