Examining Four Types of Serial Killers

The term serial killer is defined by the act either of two or more separate murders, acting alone or with another, during a period of time with breaks in between each murder, or what has been referred to as a cooling off period. They are a unique breed of individuals that make special efforts to elude detection from law enforcement.

It is not exactly known how many are practicing at any given time across the US. The FBI has given an estimate of 200 serial killers roaming in the US at one time...