Jeffry P. Freundlich, primarily known by his pen name Jeff Lindsay, is an American playwright and crime novelist best known for his novels about sociopathic Miami Police Department forensic analyst and serial killer-killing vigilante Dexter Morgan.

Dexter Morgan is a fictional character introduced as the antihero protagonist of the Dexter book series written by Jeff Lindsay, as well as the television series of the same name. In the television series, Dexter is portrayed by Michael C. Hall.