The Immortals — Andrew Neiderman

When it comes to staying young, some people will pay any price…
What if Ponce de Leon really did discover the fountain of youth? Mr. Leon is alive in the twentieth century and is the owner of a high-end cosmetics company. His handpicked salespeople are his disciples. They remain forever young and healthy, but the cost is soul-wrenching. When Cynthia Edwards realizes her husband has become part of this madness she tries in vain to make her husband understand…but Mr. Leon demands terrible sacrifices.