Dexter is a critically acclaimed dark comedy/crime drama on Showtime that follows the adventures of a serial killer. Dexter stars Michael C. Hall (Six Feet Under) as Dexter Morgan, an easy-going forensic blood expert for the Miami PD. His coworkers like him, he has a loving sister Debra (Jennifer Carpenter, The Exorcism of Emily Rose), and a sensitive girlfriend, Rita (Julie Benz, Buffy the Vampire Slayer). What they don't know is that Dexter moonlights as a serial killer and can't feel emotion. Despite his murderous urges, he lives by a code and only murders other killers who have escaped justice. Everything in his life is going according to plan, until a mysterious serial killer arrives in Miami and seems to know about Dexter's secret life. After a prolonged cat-and-mouse game, Dexter arises as the superior serial killer, but emotionally damaged by unearthed knowledge about his past. Now Dexter must elude a crack F.B.I. team, stay one step ahead of his suspicious boss Sergeant Doakes (Erik King, Oz), fulfill his murderous urges, and keep up his image as a happy, well-adjusted young man.