"Hold on just one second." Jack held up his hands defensively, squinting confusedly and glancing from Daniel to Gibbs. "Let me get this straight. You think this Greek kid murdered Colonel Havelock because his cousin got killed off-world?"

"We don't think anything yet," Gibbs answered smoothly. "But it's a lead."

"He's not technically Greek," Daniel broke in, ever concerned about details. "Just because his first name is Achilles--"

"Do we have anything else to go on?" Jack interrupted, ignoring Daniel and talking to Gibbs.

"Well," Gibbs began.

"This guy's background is totally screwed up," Abby contributed eagerly. At Gibbs' raised eyebrows, she muttered a not-very-penitent, "Sorry"

"It's actually quite a fascinating character study," Daniel spoke up again.

"Does Agent Gibbs," Jack emphasized, staring pointedly at Daniel, "have anything to say about it?"

"Hoedemaker was very close to his cousin," Gibbs surmised. "He seemed to blame Colonel Havelock for his death; motive. He, like everyone else on this base, carries a nine-mil; means. He's familiar with the elevators and wouldn't be noticed in them; opportunity."

"Wait," Tony suddenly realized something. "Hoedemaker's the elevator guard? The one who looks like someone peed in his Cheerios?"

"You're quick, DiNozzo," Gibbs praised sarcastically.

"Back up," Jack stopped them, still trying to focus on the case. "'Very close to his cousin' isn't exactly the most ironclad case I've ever heard. Do you have any more?"

Gibbs smirked. "Abs?"

She smiled hugely, pulling out the personnel files with a flourish. "Staff Sergeant Achilles Hoedemaker," she recited, relishing every moment. "He goes by Kyle, by the way. Who could blame him? Anyway," she hurried on at Gibbs' impatient glare, "his file and his cousin's, Staff Sergeant Patrocles 'Pat' Hoedemaker, are identical until..." She paused for dramatic effect.

"Until?" Jack prompted.

"Until their psychological evaluations, GeneralO'Neill," Teal'c provided, sensing Jack's impatience.

"Routine evals or was there a problem?" Jack asked, proving once again that he was sharper than he usually pretended.

"They were applying to an SG team, sir," Sam clarified.

"Jeez, did they do anything by themselves?" Jack scowled incredulously.

"Not really," Daniel answered. "They grew up together, went to all the same schools, joined the Air Force together, got assigned to the SGC together. I suppose a team was the next logical step."

"The weird part is," Tony supplied. At Jack's raised eyebrow, he amended, "Another weird part is, Pat had friends. He was pretty popular, actually, even had a couple of dates with a scientist here. I don't know what he was thinking; frankly, Colonel Carter's the only hot scientist I've ever met--"

"DiNozzo!" Gibbs barked, whacking Tony smartly across the head. Jack glared at the young agent with a look that could have nailed him to the wall.

"Sorry, boss," Tony cringed. "Anyway, Kyle didn't. Have friends. The only person he even got along with was Pat."

"Which brings us back to the psych eval," Kate interjected. "I assume it's standard for all applicants to SG teams?" Jack nodded curtly. "The psychologist cleared Pat easily. He was a well-adjusted, interactive person with no significant risk factors for any psychological disorder."

"I'm guessing Kyle didn't come out quite as good," Jack predicted, finger tapping his nose musingly.

"Ah, no," Daniel confirmed with a shake of his head.

"'Highly intelligent but displays little emotion,'" Abby read from the file. "'Exhibits extreme desire for independence and control. Aggressive, mildly paranoid, vague antisocial tendencies. Does not interact well with others.'"

"A sociopath," Jack summarized. "How'd we miss that?"

"Not really a sociopath, actually," Kate clarified. "The psychologist highlighted his worst qualities but none of them were bad enough to warrant dismissal from the military. He just wouldn't have done well on a team."

"Ya think? Somebody set him off, he would've popped 'em in the back of the head!" Jack demonstrated by shaping his fingers into a gun.

"It seems to me that SergeantHoedemaker was motivated by vengeance rather than anger," Teal'c noted.

"I think Teal'c has a point, sir," Sam agreed. "He's not irrational. He hasn't killed anyone else. He only killed Colonel Havelock out of a misplaced sense of justice. And he waited a long time before acting; he must have been planning this for months!"

"Which makes it all the worse," Jack pointed out, uncharacteristically quiet.

"We don't know that he did it yet," Gibbs reminded them all. "Let's see what he has to say first."