Bedtime Story For A Killer

I'm a detective and sometime writer. Several years ago, my wife had been brutally murdered by the worst kind of deviant one can imagine. The police had little to go on until the killer wrote a taunting message that gave his name in disguised form. A kid from high school showed me how to use anagrams to solve the case. I felt compelled to write a bedtime story for the murderer. This is it!