Okay, so this has never been done before, I'm pretty sure. You'll have to tell me what you think. :)

Disclaimer: I don't own Bones or Host.

The bones before me were old and broken, with bits of burned flesh still attached to parts. Most of the organs were gone, and what was left I was certain Cam would take soon enough.

Hodgins was working on the opposite side of the table, a pair of tweezers working rapidly as he collected bits of dirt and other small particles. He was practically glowing with excitement as he held up certain pieces to squint at.

"Oh, wow," he muttered, studying one particular piece of dirt with extra eagerness, his blue eyes lighting up and a huge grin covering his face.

I didn't ask what it was; he'd tell me later, I was sure. And I didn't particularly care while I had my own business to attend to. These bones needed to be analyzed.

"Bones!" a familiar voice called. I looked up as Booth jogged to the platform, swiping his card through the scanner with particular haste before rushing up to join me. "Anything new?"

"No, not yet... what's wrong?"

He looked flustered, and his pupils clearly showed signs of alarm. His muscles were tense as well. He frowned before answering.

"Nothing. Just a new case came in; a few other agents got it covered... but I'm sure they'll send it to me before the end of today."

"Why?"

He shook his head and sighed, "There was something... off about the whole thing."

"...is that another one of your gut feelings?" I asked. I didn't take much stock in his gut feelings usually... but this time something really seemed to have affected him. I was able to believe that something was truly wrong.

He shook his head; unusual since he usually told me off for only relying on science and not considering his instinct as an equal form of reason and a way of getting facts. Something was really wrong. Now he had me worried.

"There was... something we've never seen before... in the brain."

My eyes widened. "I need to see it," I said. It wasn't a request. It was a necessity. The scientist in me was leaping at the opportunity, and I pushed away the worry that nagged slightly at the back of my mind. Whatever this was had Booth scared... shouldn't I be scared too? No. Not me; I wasn't scared of anything. Or at least I tried not to admit it to anyone. Ever.

"Don't worry, you will." There was no joy or humor in his voice. His eyes were almost... dead looking. I frowned, allowing concern to show on my face. I figured I should let him know I was worried about him.

"Are you okay?" I asked carefully, half hoping he'd say sure, smile, and pull me away to the Diner. Unfortunately he frowned and then shook his head. Great. I was awful with comforting people. I usually asked him for help with the sort of thing... or Ange, who wasn't there right then.

I stood there and just stared at him, wondering if I should speak... or wait.

I waited, because I didn't know what else to do.

He finally sighed, and then managed a pained smile. "One good thing... Hodgins is going to love this."

"Why?" I asked, confused.

"I've got to get back... I'm sure they'll be requesting a transfer of the case to the Jeffersonian any minute now." He turned to leave.

"Wait, why is Hodgins going to love this?" I demanded, starting to follow him.

He paused and turned back; I stopped short right in front of him.

"Aliens," he said simply, and there was no humor in his tone.

"But that's-"

"Impossible. Yeah I know, Bones. Bye."

I stood there for quite some time after he'd left the lab, just staring after him, my brow furrowed in confusion. What on earth was going on? Booth was usual a rather rational human being, so referring to aliens in a serious form of context clearly showed a serious problem.

Eventually I turned back to the lab. Hodgins was now over at his microscope; apparently he hadn't heard any of our conversation. Probably a good thing, since he'd have leaped at the opportunity to discuss the possibility of life in other parts of the universe. I just wasn't in the mood to listen to his conspiracy theories at the moment. I was worried about Booth. He was taking this seriously... why was he taking this seriously?

The need to see whatever it was they'd found in the brain of the victim was becoming overwhelming. Curiosity could be a human's worst enemy, I thought irritably, and then forced myself to focus and get back to work on the other case, the current case.

The alien thing would wait until it was actually my case. Right now, this thirty year old Caucasian male needed identifying.

Unshockingly, Booth returned within the next two hours with the body. Ange and Fisher were working on the identification of our other case's victim, so I moved my priorities to this one.

The FBI team transferred the remains to one of our evidence tables, muttered a few half-sarcastic 'good-luck's and then hurried away. (I only realized they were being sarcastic after a rather long explanation from Booth... but let's skip that part and move on.)

It was more fleshy than my other bodies, which was irritating since I knew I'd have to give it over to Cam for quite some time before I could get full access of the bones. But for now I could focus on the thing that had alarmed Booth so badly.

The thing, a silvery substance, was already separated from the skull and in a special evidence container. I unsealed the lid carefully, my fresh pair of rubber gloves already on my hands, and peered in. Booth watched nervously from a little ways away.

It was strange, him acting this way. It almost made me nervous, and the strange silvery goop, no matter how strange, wasn't enough to make me afraid or anything. Yet it didn't seem... quite right, as Booth might have said. There was something off, yes those were his words from earlier. I could sort of see what he meant, actually.

The substance certainly was nothing like anything I'd ever seen. It was disconcerting, this feeling of not understanding when I was here, in my lab, surrounded in things I comprehended. Outside, when Booth was in his element, I was used to feeling a bit confused or overwhelmed by what he was able to do. But here, in my lab, it was a bit alarming.

Booth could see the frown on my face, and he shifted himself slightly, becoming more anxious as I tilted the container to observe its movement. It swirled and moved in a completely incorrect manner. It didn't behave like liquid. My frown increased as my brain desperately tried to think of what substances combined might create this.

"Hodgins!" I called. The entomologist quickly joined us; I could tell he'd been eager to leave the other case's particulates behind as soon as he'd seen the interesting new specimen come through the door.

"Yes, Dr. Brennan?" His eyes were going back and forth from me to the silver in the container, until finally they just stayed at the container and didn't come back to me.

"What do you think it is?" I asked calmly.

Both Booth and I seemed to be waiting with bated breath as he studied it and swirled a tool through it. He pulled out a bit to sample and we followed him silently to his microscope.

He let out a slight whistle as he peered at it.

"What?" Booth demanded tensely.

Hodgins looked up, his icy eyes wider than I'd ever seen them. The blood had drained from his face.

"What is it?" I asked, feeling a fresh tinge of worry.

"I... I don't know." He whispered.

Booth and I turned to look at each other, and I saw my feelings reflected in his eyes. We were both confused beyond reason, and I could feel the completely irrational fear building up. What was wrong with me today? This substance shouldn't have this affect on me; it was wrong.

I spoke up then, my voice firm and confident, "Well then, we'll just have to figure it out."

It was easier to focus on the parts that I could understand. Cam had finished removing the victims flesh and we, meaning myself and Mr. Nigel Murray, were busy studying the bones.

"Stab victim," he commented rather obviously.

I nodded and picked up a piece of broken rib with knife marks on it. I frowned. This was obviously cause of death, so what was that silvery substance?

"Did you know-"

"I'm sure she doesn't know whatever it is, Mr. Murray, and I'm sure I don't either," Cam interrupted, joining us. "I'm also pretty sure we won't care, either."

He looked away, muttering a quick apology. I knew he'd be spouting facts again shortly anyhow. He always did, no matter how many times Cam, Angela, Hodgins, Booth, and I reprimanded him for it.

"Tell me you have an update?" She said, turning to me and making it a question.

"We're doing our absolute best," I said defensively. "Cause of death appears to be several stab wounds... in accordance with the substance that is our reason for taking on this particular case, however, we are still in the darkness."

"Dark," said a familiar voice. "It's in the dark, Bones. Not darkness."

I frowned irritably and then focused back on the skeleton, choosing to ignore him.

He sighed, but before he could speak Cam started. "Do you have any new information?" she asked him.

"That's why I'm here, Camille," I could practically hear that cocky grin that was most certainly on his face.

"Then what is it, Seeley?"

"We've got our killer. So... c'mon Bones, let's get a move on."

I glared up at him. "We're still working here, you know."

"Yeah will Mr. Factoid can handle the bone work right now I think. Let's go."

"Did you know that factoid is actually-"

"Shut up." Booth's tone gave no room for argument. His slightly amused voice was now hard and serious. The flustered Nigel quickly snapped his mouth shut and ducked his head. "Bones, get your coat." Booth told me firmly.

I glared more furiously, but did comply. I slipped off the lab coat and snatched my jacket from where I'd draped it over the back of Angela's chair. Together we left the lab, leaving Cam and Mr. Murray there alone.

Just as we were headed through the doors I heard Nigel say, "You know, there is a little known fact where-"

Well, what do you think so far? This is the beginning of the invasion, as you might have been able to tell since no one really knows what is happening yet. I don't think Host characters will make an appearance, just the basic storyline and idea. So... worth continuing... bad idea... etc... you get the idea. Review and let me know what you think??