Dexter Morgan is at the center of the Showtime series Dexter.

He's a blood expert in the Miami Police Department forensics department. This is sometimes a conflict of interest because Dexter is also a serial killer.

He preys on murderers that have avoided the legal justice system, and his motivation for committing such acts? When Dexter was a toddler, he witnessed the brutal slaying of his mother.

As a result, a penchant for blood and violence was ingrained in the child. His foster father, Harry, attempted to cultivate this trait by teaching Dexter how to kill responsible, safely and by always following the number-one rule: Don't get caught.

Dexter Morgan Quotes

Maybe if I don't blink, my eyes will tear up.

Dexter Morgan

I'm just not used to checking the fridge for notes [Voice over]... just notes from other serial killers.

Dexter
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Dexter Quotes

I love Halloween. The one time of year when everyone wears a mask... not just me. People think it's fun to pretend you're a monster. Me, I spend my life pretending I'm not. Brother, friend, boyfriend - All part of my costume collection. Some people might call me a fraud. Let's see if it will fit. I prefer to think of myself as a master of disguise.

Dexter Morgan

The only real question I have is why in a building full of cops, all supposedly with a keen insight to the human soul, is Doakes the only one who gets the creep from me.

Dexter Morgan