McGee sat in Abby's lab, baffled by the news he'd just heard. Tony and Kate, together…how…why had it happened?

"McGee…" Abby said, "MCGEE!"

"Yea, what?" McGee said, snapping out of his thoughts.

"What are you thinking about?" Abby asked, "you've totally drifted off on me."

"Thinking about how Tony and Kate are gonna keep this secret from Gibbs…" McGee said.

"They'll figure out something…and we can't tell anyone, no one…" Abby said, eyeing McGee, knowing that he doesn't like keeping secrets from Gibbs.

"Yea, I know they'll figure something out, but I think he should know," McGee said, flatly.

"Ohhh…so you're planning on telling him?" Abby taunted, "I wouldn't, and we both know Kate will kick your ass if you do."

"I think I could beat her at sparring, I think I could win," McGee said, doing his best to convince Abby and himself.

"Ha, yea right, I heard about the last time you two sparred in the gym, she totally pinned you down and you couldn't move," Abby said laughing. McGee was out of comebacks, he knew Abby was right and remained silent.

"Hey, McGee, I think you should look at this," Abby said, pointing to the screen on the wall of her lab.

"Don't think I can help you there Abby…that's your area not mine," McGee said.

"Oh, come on McGee, you know you like science and know the basics," Abby retorted.

"What are we looking at?" McGee asked.

"John Doe's blood, I just ran a DNA match test…it's a near perfect match with a Mr. Joseph M. Todd…" Abby said.

"Joseph Todd? As in Kate's brother?" McGee asked in disbelief.

"That's what I'm thinking, I didn't find this DNA in the Navy files, I found it through the US Government, they must've joined the Secret Service together," Abby explained to McGee who was still staring at the results with a shocked look painted on his face.

"So who's going to have to tell her?" McGee asked.

"Go tell Gibbs and have Kate meet him in a conference room," Abby said.

"Ok," McGee said, turning to head up to the main floor.

"Poor, poor Katie…" Abby said, continuing running tests.