One other thing,” Commissioner Lewis said. The detectives sank back in their seats. “I have heard officers in this command referring to the killer as the ‘Tooth Fairy.’ I don’t care what you call him among yourselves, I realize you have to call him something. But I had better not hear any police officer refer to him as the Tooth Fairy in public. It sounds flippant. Neither will you use that name on any internal memoranda.