"What's right where?" Danny asked impatiently.

"Forensics looks at what's left behind. But this unsub left nothing other than the bodies." Spencer began spreading photos around the table. "The key is in what he didn't leave. Or rather what he took."

"The organs?"

"Yes. Maybe they aren't mere trophies. Maybe they are the key."

"The missing organs are what the guy was after?" Flack whistled to himself. "Okay that's a nasty thought."

"One I suspect you have had before." Mac grimaced at Spencer.

"Unfortunately."

"So what, our guy is a cannibal?" Lindsay suggested.

"Possibly. Except the victimology doesn't fit. Or the frequency and location of the killings."

"Maybe the guy traveled for work. That would explain the location jumping."

"Yeah, but there's still the pattern of dates."

"How so?"

"More regular. Frequent. One of my first cases at the BAU was a series of cannibalistic murders that occurred every 4 weeks without fail. Victims were hacked open, their organs ripped out. At first the locals thought they were bear or wolf attacks."

"Let me guess. They were always during the full moon." Danny howled, getting a paper ball tossed at him.

"Actually yes. The unsub believed he was a werewolf."

"Would a cannibalistic killer be this careful?" Stella examined the crime photos. "Taking the time to select and track the victims. To scatter the victim traits to avoid a clear pattern. Making sure nothing was left behind. Seems like a lot of work if the goal is some very nasty snacks."

"Typically no. Cannibalistic killers tend to be opportunistic, disorganized. This unsub is just the opposite. It doesn't fit, unless the choice of organs has meaning. And or the choice of victims."

"Didn't people way back think the liver was where the soul was." Lindsay piped up. "I remember something about that from an old comparative mythology class in college."

"Kidneys too I think."

"Eyes are the window to the soul."

"But it doesn't explain the skin."

"He removed the skin to get to the rest of it."

"But he wouldn't have to be that careful if he was just getting it out--."

"Hold up a second." Sheldon suddenly interjected. He'd been sitting at the far end of the table, immersed in the photos and reports, not joining in the conversation. Spencer had wondered what was going on in the doctor's mind, but had decided to leave him alone for the time being.

"Dr Hawkes. Did you find something?'

"Yeah." Sheldon nodded excitedly. "Danny's DD5 from talking to Lucas Clark's father." Sheldon picked up the page. "The answer is right there."