ok its not a biography but I have seen both seasons of the show that they based on this novel. And I hear the novels are wayyyy better than the show. and the show was ridiculously dope. check em out..
Darkly Dreaming Dexter is a 2004 novel by Jeff Lindsay. It has formed the basis of the Showtime television series Dexter.
The novel's protagonist, Dexter Morgan, is a young man who works for the Miami Police Department as a forensic blood spatter pattern analyst. In his spare time, Dexter is a serial killer with a catch: he only kills people, always murderers, he believes have escaped from judicial punishment.