Wendy: Well, we're working under the assumption that the killer was a foster kid, right? With probably an abusive childhood. So, to a bloody doll - I mean it's really not that much of a stretch to say that the doll represents the killer.
Hodges: Grissom had something on that. (reads from the file) "Freud's theory of the Uncanny raises the point that as children we want the doll to come to life, but as adults, we are terrified by the idea. Doll could represent the uncanny that is feared - the Sandman."
Wendy: Great, or exactly what I just said.