" A serial killer is a rare and specific criminal profile. In males the motives’re sexual in nature usually, or nonsexual sadism. And while there’s ritualistic behavior, that’s limited in most cases to binding or arranging the victims in certain ways or leaving fetishes at the scene or taking trophies, postmortem. The behavior doesn’t rise to the Composer’s level of elaborate staging—the videos, the noose, the music. He’s a multiple perpetrator.” Silence "

― Jeffery Deaver , The Burial Hour (Lincoln Rhyme, #13)