Yet the most chilling fact about serial killers is that they are rational and calculating. What They Are Before we look at who they are, we must first describe what they are. Statistically, the average serial killer is a white male from a lower to middle class background, usually in his twenties or thirties. Many were physically or emotionally abused by parents. Some were adopted.
Brain injuries are common.
Some are very intelligent and have shown great promise as successful professionals. They are also fascinated with the police and authority in general. They will either have attempted to become police themselves but were rejected, or worked as security guards, or had served in the military. Many, including John Gacy, the Hillside Stranglers, and Ted Bundy, will disguise themselves as law enforcement officials to gain access to their victims. They Kill Serial killers choose victims weaker than themselves.