Jeff Lindsay is the pen name of American playwright and crime novelist Jeffry P. Freundlich, best known for his novels about sociopathic vigilante Dexter Morgan.
The first book in the Dexter series, Darkly Dreaming Dexter, was included on the original nomination list for the Mystery Writers of America's Edgar Awards in the Best First Novel category. However, it was dropped from the list after the group learned that Lindsay had put out several books in the 1990s under another pen name, Jeffry P. Lindsay.
Dexter aired as a series on Showtime with the first season based on Darkly Dreaming Dexter and Michael C. Hall playing the title role. The show eventually ran for eight seasons, though subsequent seasons had original storylines that departed from the plots of Lindsay's books.
Lindsay has also written a comic book version of Dexter, distributed by Marvel comics, and which consists of two mini-series: Dexter and Dexter: Down Under.