Dean Koontz | $145 Million

Hailed by Rolling Stone Magazine as ‘America’s most popular suspense novelist,’ Dean Koontz is one of the best writers of all time. Having written a lot of novels — 14 of which made it to number one on the New York Times hardcover bestseller list, and 16 of which became number one in paperback. What’s more amazing is that Koontz started out his journey towards a successful career from a very humble beginning. He used to work as an English teacher.

Apparently, he wrote some of his famous work during his free time. With all his hit novels, he has managed to buy a mansion-like home in California, which is said to be 24,000 square feet. If you think that’s expensive living, we can say that it’s actually modest considering the amount of money he’s earned over the years from his writing. Imagine the budget that goes into a home security system for an area that huge!