Milly gasped in shock, and it dropped to the ground with a loud crash, sending glass pieces across the floor. The girl stood frozen, unsure if she had imagined that or not. Her heart began pounding faster and faster, the more her mind tried to understand what just happened.

She wanted to believe it was all her imagination, but the longer Milly replayed it in her head, she knew it wasn't. She heard Bobby's words in her head:

"what you are...it's a little too complicated for a book."

Milly was starting to understand what he meant. As far as she knew, she hadn't been able to prevent things from falling before; and if she didn't know, Sam and Dean certainly didn't. What were they going to think once they found out?

She looked down at the broken pieces on the floor and for a split second, considered hiding the evidence. If they didn't see, maybe they didn't have to know.

Milly brought her hands to her face and shook her head.

They were smarter than her, they'd find out.

And if they found out before she could tell them herself…

In an anxious frenzy, Milly began picking up the broken pieces, holding them in the other hand. She was so focused on finding all the larger pieces, she didn't even hear the 'whoosh' behind her.

"What are you doing here?" A deep voice spoke and she spun around to see a man in a tan trench coat standing before her.

She shrieked in surprise and stumbled back, but tightening her grip on the broken pieces as a reflex.

"Ow!" She exclaimed, dropping the glass and holding her hand. To her horror, a warm red liquid began slowly leaking out of two cuts on her hands. She'd never seen blood before, having only read about it. Milly looked up at the man with wide eyes, both frightened of him and the throbbing pain in her hand.

"I thought I might've had the wrong room, but these bags belong to…Who are you?" He demanded.

"Wh-who are you?" She asked, grabbing a pencil off the table with her good hand and holding it up to him as though it would somehow defend her against him.

"What are you doing?" He asked, a puzzled look crossing his face.

Milly had decided looks could be deceiving ever since the grandma in the pink sweater. She looked harmless yet turned out to be quite evil, so Milly didn't want to take any chances.

"Are you a monster?"

"No. I'm Castiel, Angel of the Lord."

She slowly lowered the pencil, eyeing him cautiously, recognizing the name. Castiel was the angel Sam and Dean had talked about sometimes.

"You're Cas?"

He tilted his head, unsure how she knew about the nickname he got from Dean.

"I'm Milly, Dean is - he's my father."

Cas stared at her for a little longer in silence before narrowing his eyes.

"Dean doesn't have any offspring."

"I'm not sure what that means. But it would make sense that you don't know about me, I haven't been around long." Milly explained, looking down at her injured hand where the blood was beginning to collect in her palm.

Cas headed into the bathroom and returned with a small hand towel, trying not to mind the suspicious four-foot blonde who was randomly in Sam and Dean's room.

"Here, let me help you."

He extended his hand for hers and she looked at him in uncertainty for a moment before hesitantly holding her hand out to him. He took the towel and cleaned it up, causing her to wince slightly. She watched in curiosity as he held his hand over hers until a white glow appeared above her hand. Within a second or two, the glow was gone and she looked at her hand in astonishment finding it to be completely healed.

"Wow, thanks." She whispered, still trying to process the last 15 seconds.

"You're welcome."

When Sam and Dean walked through the door later, they froze, noticing the angel standing next to Milly.

"I take it you got our message," Sam said and turned to Milly.

"You okay? I didn't think he'd come right here. We would've given you a heads up."

"I'm fine." She shrugged and Sam sat down while Dean closed the door.

"Since when do you have a child?" Cas questioned, narrowing his eyes at the elder Winchester.

"That's a long story, Cas. Can we focus on the problem at hand?"

"Yes… it's lucky you found the boy." Cas told them, glancing at the girl who sat down on the edge of one of the beds behind him.

"Oh, yeah, real lucky. What do we do with him?" Dean asked.

"Kill him."

Milly's eyes widened and she looked between the three men in shock, wondering if they'd heard the same thing she did.

Kill him?

Sam paused in the middle of loosening his tie and he and Dean stared at Cas, who stared back.

"Cas," Dean said, clearly disapproving to Milly's relief.

"This child is half demon and half human, but it's far more powerful than either. Other cultures call this hybrid cambion or katako. You know him as the antichrist."

Milly froze, holding her breath. She didn't recognize hybrid, cambion, katako, or antichrist, but she recognized "half-human". Whatever an antichrist was, but it didn't sound good. What she understood was that Jesse was half human like her.

Did that make her an antichrist too?

She was suddenly reminded of what happened with the lamp earlier and looked over to where it had been in pieces on the floor before Cas helped her clean it up.

"Anyway, I don't get it. Jesse is the devil's son?" Sam asked and Cas sighed in irritation.

"No, of course not. Your Bible gets more wrong than it does right. The antichrist is not Lucifer's child. It's just demon spawn. But it is one of the devil's greatest weapons in the war against heaven."

"Well, if Jesse's a demonic howitzer, then what the hell's he doing in Nebraska?" Dean questioned.

"The demons lost him. They can't find him. But they're looking."

"And they lost him because?"

"Because of the child's power. It hides him from both angels and demons. For now."

"So he's got, like, a force field around him. Well, that's great. Problem solved."

"With Lucifer risen, this child grows strong. Soon, he will do more than just make a few toys come to life—something that will draw the demons to him. The demons will find this child. Lucifer will twist this boy to his purpose. And then, with a word, this child will destroy the Host of Heaven."

"Whoa, whoa, whoa, whoa. Wait. You're saying that—that Jesse's gonna nuke the angels?"

"We cannot allow that to happen."

"Wait," Sam said, standing up.

"We're the good guys. We—we don't just kill children."

"A year ago, you would have done whatever it took to win this war."

"Things change."

Dean stepped forward, putting a hand on Sam's arm and putting himself between the other two.

"Okay. Hey, look, we are not going to kill him. Alright? But we can't leave Jesse here either. We know that. So...we take him to Bobby's. He'll know what to do. He's kinda already got a professor X thing going on."

"You'll kidnap him? What is going on in this town, it's what happens when this thing is happy. You cannot imagine what it will do if it's angry. Besides, how will you hold him? With a thought, he could be halfway around the world."

"So we—" Sam cut Dean off.

"So we tell him the truth. You say Jesse's destined to go dark side—fine. But he hasn't yet. So if we lay it all out for him—what he is, the apocalypse, everything—he might make the right choice."

There was a long pause before Cas responded.

"You didn't. And I can't take that chance," he growled before disappearing in a split second, causing Milly to jump in surprise.

"Damn it." Sam sighed in frustration.

While the two hunters scrambled to get weapons together, Milly gathered her courage and looked at the brothers.

"Dean there's something I need to tell-"

"It'll have to wait, kid, c'mon!" Dean exclaimed, and she hesitated momentarily before grabbing her jacket and running out the door after them.