A/N: Just know that the hardest part of writing this fic is writing the demon dialogue. I'm trying my darndest to make them as creepy and evil as possible, but I think it's pretty weak. Sorry!

Someone commented that the Avengers seemed quite depowered in comparison to the Winchesters. Remember it's only been like 1.5 days. The Avengers don't have the equipment to handle demons yet, so yeah, for this first little bit they've been kinda useless. They'll get their sea legs soon enough.

This is NOT beta'd and I have not done as thorough a job at editing as I probably should've. Expect errors.

"Hey Buckaroo!" Steve flicked black eyes at Bucky and laughed cruelly as he stumbled back in shock.

Bucky's blood ran cold and his stomach dropped as he stared in wide-eyed horror at the thing wearing his best friend. Bucky knew what it was like to have no control and to see Steve was now a victim of something even worse than Hydra was one of Bucky's worse nightmares.

Turning to Sam and Dean, Bucky demanded answers, "How the hell did this happen?"

Having no clue, Dean snapped at the demon, "Start talking, asshole."

Black eyes flicked to bright blue just long enough so the demon could roll them at the Winchesters, "I plead the fifth."

The demon let out a pained yelp as Sam kicked one of its injured knees, "Answer the question."

The deep, other-worldly growl directed at the brothers had even Nick Fury recoiling slightly. It had to be one of the most disturbing sounds he'd ever heard.

"Possessing kids is always guaranteed to be a good time." A self-satisfied smirk slithered over its face as it continued, "I was lucky enough to be in possession of an officer's meatsuit at the scene when Spiderman dropped that kid off with the police. I switched out for the younger model on a whim, hoping I could lure one of you morons alone and jump you. While Black Widow would've been delicious -" (here demonSteve! sent a wink at Natasha), "- Captain America ain't too shabby." It made a big to-do about looking up and down Steve's body and licking its lips.

Both Coulson and Bucky had to be held back as they surged forward to attack the demon, who just laughed at their offense.

Sam sneered at the demon who was still chuckling and looking mighty pleased with itself at the pain and chaos it was causing. "I don't know why you're so damned pleased with yourself. You've just handed Dean and I the perfect opportunity to gather information."

"Oh please, like you two apes are really going to torture Captain America," the demon scoffed and nodded towards Coulson and Bucky. "No way his boyfriends over there allow you touch one golden hair on his perfect head."

Bucky's face had gone white at the mention of torture. Surprisingly, or maybe not so surprisingly really, Coulson's face was stoic as he said, "Do what needs to be done. You have the full support of SHIELD."

"Like hell they do!" Bucky stepped in front of the possessed Steve, blocking him from everyone's view. (He ignored the demon's sarcastic, 'Aww, how sweet.') "No one is touching Steve. You try and I'll kill you." He looked the brothers dead in the eyes.

Dean stepped closer, "Listen, torturing a demon is different from torturing a human. We won't hurt Steve at all."

"You've already hurt him! You shot out his knees and elbows!" It was clear to everyone that Bucky was becoming a little unhinged at the situation. A possessed Steve was hard enough, but to then torture him while he was strapped to a chair? Although Sam and Dean were unaware, the rest of the room's occupants knew that the similarities between this and Hydra were a lot for Bucky to handle.

Fury, not one to dawdle when shit needed to get done, barked out, "Barnes, do you really want a possessed Captain America running out of here? Think of the damage he could do."

"The Captain will heal, Sergeant," Coulson's voice was gentle as he spoke. "You know he would be more upset if we didn't press our advantage."

Hating that everyone was right (the team's silence made it clear they all agreed), Bucky let out a yell of frustrated rage and punched the wall with his metal arm, leaving a huge hole through the drywall into the cement behind.

"Goddamn," demonSteve whistled, impressed. "Maybe I should've possessed the cyborg."

Bucky wished it had. The image of his best friend with black eyes would haunt Bucky for the rest of his life. Bucky allowed Clint to gently pull him back towards the rest of the group.

Realizing that wearing Captain America's meat wasn't going to stop it from getting worked over by the Winchesters, the demon, in an act of desperation, allowed Steve to come through. The brothers had them all convinced that Steve and the demon were separate entities. The demon had to convince them they weren't.

"Why don't we get Stevie's opinion on whether or not he wants to be tortured, huh?" The black eyes of the demon closed and it was so clearly Steve when bright blue eyes opened. His body's entire demeanor changed and the minute mannerisms they hadn't even realized were missing were glaringly obvious.

Breaking out of Clint's hold, Bucky rushed forward, "Steve!" He was about to put a hand on Steve's shoulder, but Sam and Dean stepped in front, creating a barrier, just as Steve warned, "No, Bucky! Stay back!"

"Careful," Sam cautioned. "The demon can take over instantly."

"I can feel it in here with me." Fear was an emotion that Steve wasn't accustomed to feeling. He had felt it a few times in his life, naturally, but nothing like this. He was terrified. He could feel a slimy, menacing, and altogether malicious presence permeating his entire being and slithering through his mind. Steve had drowned before, but the frigid darkness at the bottom of the Atlantic had nothing on the demonic darkness drowning Steve now. He felt like he was choking as he whispered, voice shaking, "It's awful. There's so much hate and darkness. It just wants to hurt all of you and I – I can't stop it."

"Steve." The authoritative tone of Dean Winchester broke through Steve's terror. "We will save you, but we need information so we can stop whatever's going on."

Steve's terror abated, replaced with his innate sense of righteousness and moral duty to protect the innocent. He looked at his distraught and unsettled teammates, at Bucky – "It'll be fine Buck", before locking eyes with Sam and Dean. "Do what needs to be done." His sentence was quickly cut off as the demon rushed forward.

"Son of a bitch! I should've known he'd get off on being tortured like a fucking masochist. Ugh."

"Where's Crowley?" Dean questioned immediately, wanting to get this over and done with as quickly as possible.

The demon slumped in the chair as much as the cuffs would allow, wincing at the pain in its joints from the salt round still lodged in its knees and elbows. Slouched slacker was a strange look on Steve. "Aww, what? The Incesters lose track of their little bitch? Should've kept her on a tighter leash."

"What the hell is going on with you assholes?" Sam.

"Why are you off-roading it from your normal soul-selling gig?" Dean.

The demon rolled Steve's eyes, "Yes, please ask me more. I live to not tell you shit."

"Well then, you're not going to live very long." Sam turned to Dean and held out his hand, "Rosary?"

Dean pulled out a black plastic rosary from his pocket and tossed it to Sam.

Sam caught the rosary and dropped it into the large pitcher of water on the side table. He began reciting Latin which had the demon groaning "So unoriginal" and the Avengers watching curiously. Nick and Fury exchanged glances wondering if they were about to learn the Winchesters were supernatural themselves.

"Is that a spell?" Coulson asked.

"Sam's just blessing the water so it becomes holy water, which is like acid to a demon," Dean explained.

Bucky made a pained sound at that information, "But Steve…" Clint and Natasha stood on either side of Bucky, anchoring him with gentle hands on his shoulder. He would've shrugged them off, but he knew he needed them to keep him in place. The temptation to rush forward and stop what was about to happen was almost overwhelming.

"Steve will be fine. It won't hurt him, just the demon."

Seeing a chink in the group's armor, the demon stared at Bucky through Steve's eyes and pushed, "I can make it hurt Steve though. I can make it hurt so much that not even the super serum churning through his all-American veins will heal him. He'll spend the rest of his life in agony, feeling as though his blood is boiling while his flesh is sizzling off his bones."

Bucky's face turned pale at his taunting words. Natasha and Clint tightened their grip on his arms.

Sam approached Bucky, making sure to block his view of the demon, and said softly, "It's lying. That's what demons do. I promise you the holy water won't hurt Steve at all. Here, hold out your hand." Sam poured a little of the water on Bucky's hand. "Painless, right?" Bucky nodded, watching as the cooling water dripped from his hand to the floor. "That's all it'll feel like to Steve, but to the demon it'll feel like acid. It'll smoke and scream, but it's not Steve smoking and screaming. It's the bastard possessing him."

Dean's stern voice warned, "You need to remember that because this son of a bitch will make a big show of it and it's going to look like it's Steve who is in pain. If you need to leave, go on and leave."

Bucky took a deep breath and shook his head, allowing his hair to fall forward and cover most of his face, "It's fine. I'll be fine. Go ahead."

"They don't know! They're just trying to convince you to torture me for no reason. I don't know anything! I've possessed loads of people and - AAHHH!" Its desperate words turned to agonized screams as Sam doused its head in holy water. It sounded like Steve was being burned alive.

"Bucky! Help me! Please!" Bucky watched, agonized, from his spot in the corner. Steve had tears streaming down his face and was choking on pained sobs.

"Jesus Christ, this is rough." The soft statement came from Tony who was watching from behind Bucky. Thor stood beside Tony, grimly watching the proceedings.

"Where is Crowley?" Dean positioned the water pitcher directly above the demons head again.

Despite eyeing the water with trepidation, the demon sneered, "Why don't you check your ass? He's usually so far up it – AAHHH!"

"Sorry, what was that?" Dean put his hand behind his ear as if he was hard of hearing.

"You steaming –AAHHH! sack of –AAHHH!"

"Could you maybe enunciate a little more?"

"You should show me more respect," the enraged demon spat out when it was allowed a moment to breathe. "If only you knew who I was working for. You have no idea what you're up against. You saw how desperate that reaper was and reapers aren't scared of shit. Even the wannabe 'king of hell' is learning first hand just how powerless he is now."

Sensing the demon was on the verge of a complete information hemorrhage, Sam figured the clichéd reverse psychology method might work to push it over the edge. So, ignoring the demon, Sam turned to his brother, "You know what, Dean, we should just exorcise it now. This is such a waste of time. It probably doesn't know anything important anyway. Just a lackey that happened to get lucky."

"Luck had nothing to do with it!" Like the typical hellion, it suffered from cockiness and a severe pension for bragging, "You know how hard I had to work to get where I am?"

"You mean tied to a chair with no knees or elbows?" Dean observed cynically.

Glaring at Dean's insolence, the demon revealed, "I'm part of the elite; part of His inner circle." Wanting to drive home just how impressive that was, the demon continued, "Once He gets His strength back, the Risen Messiah will soon be more powerful than even your God."

Despite the unsettling information they were hearing, the Sam and Dean wanted to roll their eyes at the stupidity of this demon. It really was just hemorrhaging information. Poor Captain America. Being possessed is one thing. But being possessed by a complete idiot? That was truly unfortunate.

Sam scoffed and gave the possessed Captain a sardonic once over, "If you're what passes for his inner circle, then he's clearly scraping the bottom of the barrel."

If there was one thing Sam and Dean had learned over the years it was that demons were petty things that hated to be overlooked and ignored. True to form, this one was quickly getting frustrated that the brother's weren't taking it seriously.

"You know for a couple of living legends, I'd have thought Sam and Dean Winchester would know how to spot a legitimate threat. How are you even still alive?"

Dean shrugged, seemingly unconcerned, "Well, we have died a few times. Exactly how many buckets have we kicked, Sammy?"

"Y'know, I've lost count at this point," Sam shot a 'what can you do?' look at the demon.

Despite how infuriating it was that Stark kept hacking Jarvis into SHIELD's systems, Coulson couldn't help but be glad that the AI was recording every second of this interrogation so he could review it later. The Winchesters were handling the situation and target beautifully, despite it wearing the face of Captain America. For all that Phil knew what had to be done, he didn't think he'd be able to conduct the interrogation against his idol as effectively.

"I can't believe the Risen Messiah is worried about you two."

"Aww, really? He's worried about little ol' us?"

Keyed up, the demon began to rant maniacally, clearly desperate for an audience at which to blab its many complaints, "The amount of time He spends ranting and raving about Sam and Dean Winchester and His revenge against you two for "killing" him is, quite frankly, ridiculous. We would be so much further along with our goal if He spent even half of that time productively. But can you tell Him that? No. Not unless you want a fate worse than death. Ironically." Chuckling at its apparent joke, the demon's eyes lost the sheen of madness. No longer blinded by mania, its face grew pale as it realized it had been word vomiting state secrets. It gulped at the sharply smiling faces of Sam and Dean Winchester.

"Oh no, please, continue." Sam gestured grandly for it to go on.

Frantic, the demon said, "Kill me! Please! You have to! If He finds out what I've said…" It trailed off, unable to even speak the horrors awaiting it.

"Oh no, we won't be killing you. You're going straight back to Hell." The demon paled even further and began pleading for death again only to be cut off by Dean, "The way I see it, your only real option is to tell us everything now so we can kill your boss and then you won't have to worry about it."

The demon looked truly torn. It was clearly terrified, but didn't want to give anything more to Sam and Dean. It mustered the last bit of bravado it had left and said, "You don't know anything. I didn't give you anything specific."

"You're right, you didn't give us specifics. Only that he's got Crowley." Sam held out his hand and started ticking off his fingers as he and Dean volleyed facts back and forth.

"He scares reapers." Dean.

"He's unbelievably powerful." Sam.

"And, last, but not least, we've "killed" him before and he's out for revenge." Dean looked contemplative at that last point, "We've ganked quite a few big bads in our day, Sammy, but there should really only be a handful of hitters as heavy as this guy is describing."

Sam took mental inventory of the truly noteworthy beings they've killed before replying, "If what it's saying is true, then we're facing something that could potentially be more powerful than Chuck." Sam looked his brother in the eyes, "That's power on a cosmic level, Dean."

Dean's eyes widened and he looked at the demon, "…please don't tell me your 'Risen Messiah' likes fried pickles."

The demon's jaw dropped and a look of complete horror stole over its features as it realized Sam and Dean had figured it out.

Refusing to utter another word (even though it was too fucking late at this point), the demon snapped its mouth shut and glared up at the Winchesters.

"Yeah, it's a little late for the cat to get your tongue now, but if you're truly ready to go home, then suit yourself." Looking to Sam, Dean checked, "You all set?"

"Yep." Sam began to recite the exorcism, "Exorcizamus te, omnis immundus spiritus omnis …" After the first few words, the demon broke and began pleading, "No! Please! Just kill me! Please! I don't know anything else, but I'll do anything!" Sam ignored its panicked pleas and continued the recitation.

"Sam, wait!" Dean interrupted the exorcism and looked at the demon shrewdly, "You want to die? Fine. We'll kill you."

A wave of relief washed over the demon as it gratefully said "Thank you!"

"But first, you have to do something for us."

"Yes, of course. Anything!"

"Dean, what are you doing?" Sam had no idea where Dean was going with this.

"You have to free Crowley."

"What?! No! I can't!"

Dean shrugged, unsympathetic, "That's the deal. You free Crowley, come back here, and we kill you, OR we send you right back to Hell and Death doesn't kill you. Which, frankly, is a terrifying prospect."

Looking panicked, the demon's eyes raced around the room as if searching for another alternative, "No, you don't understand. Crowley's in Hell, locked in a cage, guarded by hellhounds. There's no way I can possibly get to him."

"Going once, going twice…"

"Fine! Fine! I'll do it!" Still panicked, the demon asked, "Say I am able to free Crowley, then what? I can't just leave Hell all willy nilly like him. I need permission (which I definitely won't get) or a summons from topside."

"Get Crowley to bring you back with him. I'm sure he'll be grateful enough to haul you back up here."

The possessed Captain leveled Sam with an incredulous look, "Have you met a grateful Crowley before? No. Because it doesn't exist."

"Well, maybe if you ask really nicely, he'll kill you himself before he hauls ass back up here." Dean's suggestion actually had the demon's eyes lighting up with hope.

"Yeah, that should work! But if he refuses, then you have to summon me back up here and kill me with that knife."

"Yep. Great. It's settled. Sammy, you wanna get the show on the road and send this banana home?"

Sam nodded and the Avengers watched as black smoke began seeping out of Steve's mouth, oozing to the ground where it puddled until Sam's words had it burning through the floor and disappearing back to Hell.

Bucky was the first one to speak into the resounding silence, "Steve? Is he…?"

"He's okay. He'll just need a minute." Sam reassured everyone.

"A minute? He's gonna need medical, Winchester. Those bullets will need to be removed. Uncuff him." Fury ordered as Coulson comm'd medical to come and collect Captain Rogers.

A pained groan grabbed everyone's attention. Upon opening his eyes and seeing his surrounding teammates, Steve went from groggy to alert instantly. Looking at Sam and Dean he desperately asked, "It is gone?"

"Yeah, Cap, it's gone. You can't feel it anymore, right?"

Steve took a moment to assess and breathed a sigh of relief when he could no longer feel the demonic presence in his mind. "No, I can't feel it anymore."

There was a collective sigh of relief from his teammates who all smiled at him. Bucky stepped even closer and tentatively asked, "How ya feelin', Stevie?"

Letting out another groan, Steve let out an emphatic, "I need a drink."

Tony piped up, "Spangles, I think you probably need about 10 drinks. Thor's got the good stuff. We'll liquor you up when we get home."

As Sam stepped forward to uncuff Steve, Dean went to the conference room doors and locked them.

Coulson was the first one to notice, "Mr. Winchester?"

"No one leaves until we know for sure nobody else is possessed." Dean crossed his arms over his chest and stared down each of the room's occupants. "Everyone else take a seat and hold out your hand as Sam comes around with holy water."

Without a word of protest, the remaining Avengers, Fury, and Coulson all took a seat and held out their hands. After dousing everyone's hands in holy water and everyone coming up clean, Dean unlocked the door.

Groaning, Clint put his head on the table and pleaded to the room in general, "Can that be the end of the demon Avengers? I don't think I can handle fighting a demon Black Widow."

Natasha scoffed, "You can't handle fighting Black Widow period."

Clint shrugged, knowing it was true.

Looking around the room, Dean said, "I hope none of you have a problem with needles."

"Hey, does this make me look like a badass?"

While everyone else on the team had opted for black, Clint stood in front of the mirror and admired the bright purple of his anti-possession tattoo.

A/N: So yep. It's Death. Hurray! I know I spoiled it already for some of you a while ago (sorry!). The title of this fic is from the poem/saying "When Death Comes Knocking". I'll get Sam and Dean's reactions next chapter.

In case anyone is worried – Peter didn't get demon tested, but he's not possessed.

I'd love to know what you think! Crowley is coming up next!