The perp did leave dna at the abduction scene. It may or may not be fingerprints. I don't think it's been reported where the dna was left. I'm also not sure if it was verified that the DNA was an "oily substance". Does anyone here know or remember if that is fact?
No, you didn't miss anything.
As I said, the DNA thing is only one of many theory's running through my head.
When the info about the pp underwear was 1st released, some people thought it was left at the scene by accident. With the new info, don't most of us agree that's not the case? That lends much creedence to the theory that the perp is "playing games".