In this article, we look at some of the reasons why Tony Soprano was a fully-blown sociopath.

According to psychologist Joel Norris, serial killers can go through seven psychological phases.

Serial killers and serial rapists often have comfort zones. These comfort zones consist of areas that they know and feel acquainted with.

Serial killers won’t always stick to their victim type. Other factors such as availability and vulnerability also come into play.

The link between certain murders should never be ruled out because of M.O.