"So… where to begin…"

Jack scowled.

"How about starting with telling us who that walking skeleton was…?"

Dumbledore smiled.

"His name is Tom Riddle – although most call him Lord Voldemort. Most prefer not to say his name at all…"

"And he is…?"

"A powerful dark wizard who has become the rallying point for all the rest. He desires power, and is more than willing to destroy those who stand in his way – or those he simply perceives as being in his way."

"Dark wizard, huh?"

"Don't be so skeptical, Colonel O'Neill," Dumbledore chided, gently. "The wizarding world does, indeed, exist, and you are – whether you like it or not – connected to it by ties you cannot sever."

"You mean Jack really is related to this Voldemort guy?" Daniel asked.

"I'm not related to him, Daniel. He's-"

"Your older half brother," Dumbledore said.

"I'm pretty sure my mom would have told me if I had a brother," Jack said. "Especially an evil wizard brother."

"She didn't know," the old man told him. "And Tom wasn't evil when he was younger – or at least, I didn't see him as such. Although perhaps I should have…"

"So, wait a minute," Sam said, speaking up. "Voldemort really exists?"

"Yes."

"And so does everything else in the Harry Potter books?"

"Most of it, yes. Like I said, there were some embellishments when Rowling wrote them – and I'm certain there will be more if she's allowed to continue writing them." He rolled his eyes, as if the thought of that bothered him.

"But-"

"I don't believe in magic," Jack said stubbornly.

Dumbledore smiled.

"Do you believe in aliens?"

The colonel scowled, unwilling to discuss that, either.

"Maybe."

"And why?"

"Because we've seen aliens," Daniel said.

Jack gave him a hard look, but Daniel just shrugged.

"He knows about the Goa'uld and the Tok'ra, Jack. He probably knows something about aliens, too."

Yeah, that was true, probably.

"That doesn't mean we need to teach him anything he might not know."

"I know far more than you might think, Colonel O'Neill," Dumbledore said with another smile – and the boundless wisdom in those blue eyes of his made Jack believe him – although he wasn't going to admit it.

"Yeah, whatever. You were telling us about this Voldemort guy."

"Your brother."

"He's not-"

"Sir." Sam was already tired of listening to him argue. She wanted to hear more, and knew she wasn't going to as long as Colonel kept arguing. O'Neill turned to her, scowling, and she shrugged. "Let's hear him out."

Sure, it was easy for her to say. Wait until the old goat told her she was related to the rat guy or something. Then she'd be just as grumpy as he was.

"Fine."

"As I was saying, Colonel O'Neill," Dumbledore continued as if Jack hadn't interrupted. "Voldemort is probably the greatest threat to the wizarding world there is – much like the Goa'uld are to your Muggle world."

"How do you know about the Goa'uld?" Daniel asked.

"How is he threat?" Jack asked, ignoring Daniel's question. "Just wave your wand and make him disappear."

Dumbledore smiled.

"It's not quite that easy, I'm afraid."

"Yeah? Why not?"

"He knows as much magic as I do. He could come right back from wherever I sent him."

"So turn him into a frog or something."

"I thought you don't believe in magic?"

"I thought you did?"

"What does any of this have to do with us?" Daniel asked, before the two of them could start verbally sparring. "Why would this Voldemort guy abduct us – I'm assuming he's the one that did it?"

"Indeed." Dumbledore said. "He's interested in Colonel O'Neill, of course. Far more interested in Colonel O'Neill than Colonel O'Neill is in him, obviously. Of course, Voldemort has known of the existence of his little brother for a long time, now, and like the rest of us I'm sure, has wondered if the blood of Godric Gryffindor bred through in him."

"You mean Voldemort thinks Colonel O'Neill is a wizard?" Sam asked, incredulous.

"He may very well be one," Dumbledore said, looking at Jack for a moment as if to see what kind of reaction O'Neill was going to have to that. When Jack's expression didn't change – it was annoyed and stayed that way – he smiled and turned to Sam. "Chances are, however, that he isn't. And even if he were, well… it's far too late for him to learn how to use his powers, now."

"I don't have any powers," Jack said, and now his voice was just plain aggravated. "And stop talking about me like I'm not sitting right here."

"I'm sorry, Colonel, but the danger to you is very great, now, and we have to address it."

"What danger?"

"If Voldemort believes Colonel O'Neill is magical, then he's going to continue to be interested in him."

"Why?" Sam asked, intrigued despite the oddity of the conversation they were having. "You said yourself that even if Colonel O'Neill has powers, he's too old to learn to use them."

"I'm not that old," Jack snapped.

"Because blood calls to blood, Major Carter," Dumbledore said. "If Colonel O'Neill has magical talents, and Voldemort gets control of them, then he can use them – through their blood ties – and Voldemort will gain an advantage that we cannot possibly overcome."