TV Show - Dexter

I started watching an interesting TV show called Dexter. This TV show tells us about a person whose name is Dexter Morgan. Dexter has a double life. On the one hand, he is a forensics specialist in blood-spatter analysis for the Miami police. On the other hand, he leads a secret life as a killer. He has had a thirst to kill from childhood. His first victim was a dog. He decided to kill it because his mom was sick and couldn't fall asleep due to the fact the dog was barking all night. Dexter's father was a cop. Of course, he noticed that Dexter killed the dog. He decided to teach Dexter how to be neat and hide traces so that he can kill terrible guys.