Dexter Morgan is a Miami-based blood spatter expert who doesn’t just solve murders; he commits them too. In fact, he’s a serial killer — but he only murders the guilty, so he feels justified with his lifestyle choices. His policewoman sister and his cop co-workers have no idea Dexter lives a double life; however, adoptive father Harry knows his secret, and does, in fact, help Dexter hone his “skills.” It’s a unique brand of justice for which charming Dexter feels a psychological hunger.
The world at large believes Dexter Morgan died in a tragic boating accident, and in a way the world at large isn’t wrong. Far from the life he knew, living under a false name in the small town of Iron Lake, NY, he’s successfully tamped down his Dark Passenger for nearly 10 years. With a normal job and a Chief of Police girlfriend, it seems he’s got life under control – until his son shows up and turns his world upside down. Rattled, Dexter yields to his homicidal urges and soon finds himself on a collision course with a very dangerous local.