Hmm.
That three hour call on a cell phone owned by a man that didn't have anyone come looking for his effects within two months? That strikes me as a little odd.
On the three hour call, was it out-going or in-coming? When was it placed? Are there other calls from the same number, and are they outgoing or incoming? How long are they? Was there a call from/made to that number shortly before he left the office? Am I totally barking up the wrong tree?
On the bodies, a serial killer typically has some sort of ritual he never (or at least rarely, and with great reluctance) stray's from. If he was taking something from the bodies, there would have been something missing from the security guard. I see little reason to attempt to exhume the bodies. Unless we spot something missing from future murders, in which case it might not be a bad idea to check.
What we know about the killer:
- Pseudo Professional. Has all the trappings of a trained killer, but does everything sloppily and with excess:
+ He/She uses some form of silencer (either home-made, or purchased out-of-state/illegally). Professional.
+ He/She collects their spent shell casings, making identification of the murder weapon more difficult. Professional.
- Kill shots have been excessive. The killer has been using gobs of ammo where single rounds could do:
- Three rounds in first victim, two of them head-shots. The victim was seemingly pulled from his vehicle, so we can assume close range. Unnecessary.
- Seven (!) rounds in a
tied up hostage, victim number two. Seriously. Fourteen (!!!) rounds in victim number three. As I've already stated, I believe this scene was staged, and the MP5 was fired
after the murders. Oh, and he had to switch mags at some point during this murder. I have a 15 round 9mm mag at home, you don't really get bigger than that. That means most of those bullets were fired at corpses.
- Three rounds to the chest of victim number four. I'm leaning towards this one not being staged now. I'll discuss that in a moment.
- All four murders occurred in situations that can easily be classified close range. He likes his victims to know he is there. He wants to watch the victim convulse and die.
On the subject of murder four, I think he tried to get another close-range murder, but the guard surprised him by fighting back. The three close-range chest shots were ones made out of panic. He probably fled the scene right away.
On the subject of the MP5, you can buy them (at least you can here in WI), but only the single fire model. You can modify it for full-auto, but Grakelin did not say if it did full-auto or not.
Check for anything under Smith's fingernails, it is doubtful he scratched the killer but if he grabbed him hard enough there could be traces of the killers skin.
The blood in the warehouse would indicate that either the body was moved or the victim was able to move after he was wounded. Ask the coroner how quickly the victim died and investigate the blood trail to see if I can uncover anything further about it.
^ Do this. Run the blood against the victim, and if it's not a match, the FBI DNA database. I don't think we'll get a match, but you never know.