How to Tell if Your Neighbor is a Serial Killer

During the course of my vast criminology research,1 I'm often shocked not only at the gruesomeness of the crimes committed (and what these crimes says about the human condition), but also at how often a brutal killer's friends, neighbors, and even family members lived seemingly in complete ignorance of the killer's true nature.
Hence, the need for this blog post.2
How to Tell if Your Neighbor is a Serial Killer:
1. He is male. You can't argue with statistics. Nearly every single serial killer, e...