Mortal fear - Greg Iles

By day, Harper Cole is a successful commodities trader working from his home in the isolated Mississippi Delta. But at night he is a system operator for EROS, a sexually explicit on-line service that caters for the erotic appetites of an exclusive clientele.

But Harper's secret life is about to be shattered when a twisted serial killer uses EROS to select and stalk his female victims. And suddenly he finds himself a prime suspect in the eyes of the FBI.

In order to clear his name Harper knows he must lure the real killer into the open, and impersonating a woman online, someone he once loved, he begins to play a very dangerous game with a psychopath. A psychopath that could destroy the very fabric of Harper's world.