Mass Murderers

     There are two kinds of mass murderers. There are the kind who go to a public or semipublic place (like a business or a school) and open fire, for example. These types are making a statement, a statement that is so important to them, has taken on such significance in their lives to get the point across...

     If the crime is committed in private, or away from witnesses, on the other hand, there is more chance the killer is thinking about getting away...

John Douglas and Mark Olshaker, The Anatomy of Motive, 1999