Dexter

Dexter is a crime drama about Dexter Morgan, a man who leads a double life as an incredibly likeable forensics expert for the Miami Police Department and as an emotionless vigilante serial killer. Taught by his foster father to harness his lust for blood and killing, Dexter lives by his own strict moral code - he only kills murderers who can't otherwise be brought to justice. Dexter is a killer who grapples with fitting into society while, at the same time, he struggles with his inability to feel emotion. The irony of Dexter's life is that he works closely as a blood splatter analyst with the very people who hunt his kind - the homicide department.

Dexter is an American television drama series that airs on the premium channel Showtime. Set in Miami, the series centers on Dexter Morgan (Michael C. Hall), a serial killer who works for the Miami Metro Police Department as a blood spatter analyst.
The show is based on characters created by Jeff Lindsay for his series of Dexter novels. It was adapted for television by Emmy Award-winning screenwriter James Manos, Jr., who wrote the pilot episode.
On October 21, 2008, Showtime renewed the series for a fourth and fifth season, each consisting of twelve episodes. Season 4 aired its season finale on December 13, 2009 to a record-breaking audience of 2.6 million viewers, making it the most-watched original series episode ever on Showtime

When we last left Dexter, he had survived his showdown with the Ice Truck Killer, and unearthed the terrifying story of how he came to be a murderous psycho - an emotionless killing machine, taught by his father Harry to channel his dark urges and apply his touch of death to only those that deserve it. Season Two opens with his sister Deb struggling to bounce back from her traumatic encounter with the Ice Truck Killer, hard-ass Sergeant Doakes tailing Dexter, and the shocking discovery of garbage bags filled with severed limbs at the bottom of the ocean.
Season two of Dexter is all about decisions. Lila or Rita? Old code or new code? Run or fight? Right or wrong? Well, one thing’s for sure: When it comes to writing, casting, acting, and production, the makers of this show made all the right decisions. Michael C. Hall is simply superb as the title character. You’ll never find yourself more willing to genuinely root for a serial killer. It’s bloody liberating.