DEXTER , 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 kills 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. this psychological hunger started when his mother was chopped to pieces with a chainsaw in front his eyes and his brothers inside a trailer and was left there for 2 days in a blood bath 2 cm thick until Henry found him , Henry adopted Dexter but not his brother because he was older and long gone psychologically , Dexter turned out to be a serial killers that only kills the guilty and keeps a trophy of a drop of blood from every victim eventually crosses path with his brother who turns out to be a serial killer that doesn't have a code. Dexter was known as the bay harbor butcher because he chops his victims and drops them in the bay harbor .