Things were going from bad to worse very fast. Dean had hoped to enjoy Allegra's company more (while ignoring Sam's increased bitch behavior), but it wasn't meant to be. After meeting some prophet named Chuck, who apparently knew more of the whole impending Apocalypse but just wouldn't - or couldn't - say anything, the brothers discovered their father actually had another son named Adam. Allegra left after they met Adam, supposedly to find out everything she could about Lucifer's little bitch from Hell, Lilith, and the remainder of the Seals. Yet Dean knew that wasn't the real reason. And had he known what would have happened next, Dean wouldn't have let Allegra go.

Ghouls found Adam and his mother and used them to get to the Winchesters. Their brother was already dead. They managed to defeat the monsters and gave their half-brother a Hunter's funeral by burning his body.
Dean had hoped to catch a break after that roller-coaster, but it just kept on coming, one crazy loop after another. Like saving Castiel's vessel, Jimmy Novak, and his family from demons and getting Cas back in Jimmy - that was what Dean considered a 'slightly weirder but still pretty normal day.' Finding out Sam was hooked on demon blood was not.

With the help of his father's friend, Bobby Singer, Dean locked Sam in Bobby's panic room. His brother's screams reached the living room, where he and Bobby were trying to find a way to get him off the stuff. But his mentor had his own opinion on the whole mess.

"Correct me if I'm wrong, but you willingly signed up to be the angels' bitch?"

Dean sighed wearily. He expected Bobby wouldn't be happy with the deal he made with Castiel, giving his loyalty to the angels, but what else could he have done?

"I'm sorry, you prefer 'sucker'?" added Bobby at Dean's reaction. "After everything you said about them, now you trust them?"

"Come on, give me a little credit, Bobby! I've never trusted them less. I mean, they come on like shady politicians from planet Vulcan."

"Then why in the hell did you...?"

"Because what other option do I have?! It's either trusting the angels or let Sammy trust a demon!"

Bobby hummed in acknowledgment. 

"I see your point," he said.

Dean turned back to the door. He was really hoping Allegra would come in at any moment now. He needed her to do just that. He wanted her back. To see her. To talk to her. To... anything really. She would know what to do. Then he noticed something. Silence.

"You hear that?" he asked Bobby.

"Yeah, that's a little too much nothing."

They both hurried to the basement and opened the latch in the panic room door. Sam was on the floor, having some sort of seizure. Dean wanted to storm in to help his brother, but a little voice in his head stopped him.

"What if he's faking?"

"You really think he would?" Bobby sounded doubtful but hesitant nonetheless.

"I think he'd do anything."

Suddenly, Sam slammed against the wall like a ragdoll. Some invisible force kept him up.

"That ain't faking!" said Bobby.

They threw open the door, got to Sam, and managed to get him off the wall and onto the cot.

"We're gonna have to tie him down for his own safety." Bobby noticed Dean stood frozen "Dean? You with me? Dean! Hurry up before he has another fit!"

He snapped out of his trance and helped Bobby with keeping Sam down, while reaching out to the only he believed might be able to help.

"Allegra, if you can hear me, I really need you now more than ever. Please, Allegra!"

"DEAN!" 

His head snapped back to the open panic room door. Did he just hear...?

"Dean, where are you?!"

Yes!

"Who the hell...?" 

Bobby looked at Dean, but he was already at the door and shouted out.

"ALLEGRA! Down in the basement!"

The redhead hurried down the stairs. Dean suppressed the urge to smile as she came into view. He couldn't believe she actually came. 

"It's Sam, hurry!" 

Allegra sprinted past him. She knelt down beside the cot Sam was lying on, dropped a bloodstained knife on the ground, and put her hands on his chest. The warm glow Dean had become so familiar with spread through the room. He felt it surrounding him and allowed himself to take comfort, knowing she had this under control. 

Bobby stepped back from the cot, flustered at the scene before him. He reached for his holstered gun, but Dean shot him a warning glare. Under no circumstances could he let Bobby interfere with whatever Allegra was doing. She needed to focus to help Sam.
When Dean noticed the warmth fading, he stepped up to the cot. He knelt beside Allegra, carefully touching her shoulder. She slumped right into his arms, breathing heavily. The effort of using her shield to the maximum exhausted her, but she'd done it anyway. Sam was just asleep now.

Dean picked Allegra up and carried her out of the panic room. He took her upstairs and put her on the couch. Carefully, he stroked a lock of red hair out of her face. Only now did he notice what a mess she was.
Allegra's beautiful hair was all tangled up. Her face was smudged with dust and dirt, and she had a scratch on her cheek. Blood ran from her nose. He gathered that must've been from using her power just now, remembering she also had a bloody nose after using them on Alastair. The dark bruises on Allegra's neck looked like someone had tried to strangle her. Blood covered almost her entire shirt and part of her jeans, but it didn't appear like she was wounded. The blood wasn't hers, thank God.

"Bobby, get me a cloth and some water," ordered Dean when he noticed the other Hunter had come up as well.

But Bobby didn't move an inch. He held the knife Allegra dropped in the panic room and flipped it over and over in his hands. A silent gasp escaped him then, and he looked up at Dean.

"Got something you wanna tell me, son?"

Dean rolled his eyes. He got up to get the water and cloth himself so he could wash Allegra's face but was halted by Bobby as he took a firm hold of Dean's arm before he reached the kitchen.

"Bobby, what the...?"

"Don't you ignore me, boy! Bad enough you got angels on your ass but now this girl too?! What the hell are you thinking?!"

Dean stared at him with wide eyes.

"You know her?!"

"Know her?" Bobby scoffed. "She was the one thing your daddy and I ever actually came to blows over. He believed she was good, even though she'd just used the 10 freaking plagues of the Exodus to wipe an entire town off the map. Gave her his knife too. This knife. Had it been up to me, I would've shoved it in her heart and shot her in the head for good measure."

Dean couldn't believe what he was hearing. The Hunters from Allegra's story were his father and Bobby? And his dad had been the one to let her go? That didn't sound like him at all. John Winchester had always been 'shoot to kill first, ask questions if need be later.'
Bobby tried to push Dean out of the way to get to Allegra, but he planted his feet firmly on the ground and glared at his mentor.

"Dean, move your ass before I smack you down," threatened Bobby.

"Go ahead, but you're not touching Allegra," Dean said defyingly.

"What is it with you Winchesters and saving this girl?! She's bad news, son! But hey, if you want to make the same mistake your brother is making, have at it. I'm done warning everyone."

He let go of Dean's and stomped away, leaving him alone with an unconscious Allegra. Dean glanced back at her. He always suspected Allegra was in his life for a reason. Now that he knew his own father let her live all those years ago, he was even more convinced of that fact. And there was no way in hell he was gonna let Bobby or anyone else hurt her.

***

Allegra's head was throbbing. The voices in her head were louder than ever. There was absolute chaos amongst the angels. Some called to arms, others called for peace, but most were... scared. No doubt about it; something big was going down. 
Carefully, Allegra leaned on her elbows to try and make out her surroundings. Looked like she was lying on a couch in someone's living room. There was a clear view of the kitchen and a car junkyard right outside the window. She put a hand to her head, hoping to somehow stop the pain. 

Okay, take a breath and think calmly now. The last thing I remember is... Dean calling me. He needed help with... Sam! 

A noise to her right made her look up. To her shock and dismay, Allegra found herself in the presence of the Hunter who tried to kill her when she was 14 years old. He sat at a desk of sorts. Both it and the floor were littered with books and papers.

"About time you woke up," he said with a huff.

Allegra tried to get up from the couch but tumbled to the floor. The Hunter came from behind the desk and walked towards her.

"Stay the hell away from me!" she yelled in a panic.

He scoffed.

"I ain't gonna hurt you, sweetheart. You got Dean to thank for that. Up you get."

He pulled her up by hooking his arms underneath hers and put her back on the couch.

"Now, clearly, you remember me, so I wanna make one thing perfectly clear. You're damn lucky you got Dean on your side 'cause if it were up to me, I'd have corrected the mistake I made 16 years ago. I haven't forgotten what you did then, and I got my eyes on you, so you better don't try anything that'll make me wanna rethink my promise to Dean about ending you, comprende?"

She nodded vehemently. 

"Good." He handed Allegra her knife. "Here, I've already cleansed it for you. Name's Bobby, by the way."

"I'm Allegra," she said, looking around her. "Where euhm... Where's Dean?"

"Gone. Don't know where. You wouldn't happen to know how to find him, would you? Or isn't that one of your powers?"

"I-I can try. And Sam? Is he...?"

"He got out. Still don't know how; the panic room is fortified against demons. Dean went after him but came back without his brother, and then he just, poof, disappeared."

Allegra sat up straight and closed her eyes so she could focus on locking on Dean's soul. But there was something else she sensed first.

"I feel the presence of angels in your house. They must've taken him. Lemme see if I can..."

"Why the hell would they do..."

"Found him!"

"...that?"

Allegra transported herself to Dean. But her powers hadn't recuperated yet after using a fair amount of them on Sam, and she smacked on a cold floor. Through the ringing in her ears, she heard Dean's voice.

"Allegra?! What the hell are you doing here?"

"Oh, you know, felt like dropping in. Do you mind?"

Dean pulled Allegra up and kept one arm around her as he carefully led her to a chair. She took in her surroundings. They were in a green room decorated with white and gold, with no windows or doors. There was a bowl with iced beer bottles and a big plate of stacked hamburgers on the table. At least they wouldn't go hungry.

"Where are we?" she asked Dean.

"Pre-Apocalypse green room. Angels are keeping me here until the last Seal breaks, and they can send me down to whoop Lucifer's ass."

"Damn, it's true then."

He frowned at her.

"Wait, how do you...?"

"I swear I found out like an hour before you called me," said Allegra quickly. "I discovered that the last Seal needed to break Lucifer out can't be just any random one, and I was suddenly surrounded by this douchebag Zachariah and some other angels and..."

"Zachariah?!" exclaimed Dean. "He's the one who messed you up like that?! I'm gonna kill that bastard!"

Allegra couldn't help but smile. She'd become used to fending for herself, so having someone in her corner was nice. Dean's green eyes met hers. Her heart skipped a beat when she gazed into them. They were so full of... concern. For her.

"You feel better now, right?" 

"Yeah... Yeah, I'm good," she said.

Dean took her hand in his, and Allegra felt a surge of warmth going through her. It didn't come from her shield, though. It was Dean. He made her feel... everything, really. She shook her head to try and get over the warm fuzziness and asked, 

"Where's Sam?"

He gave a weary sigh.

"I don't know. The last thing I told him was never to come back if he walked out the door. But out he went, with that demon slut Ruby. I returned to Bobby's to check on you, and then Cas plucked me away and benched my ass here."

"We'll find him."

The corner of Dean's mouth went up in a smile for like a second. Then his expression changed as a thought seemed to cross his mind.

"Oh God, Bobby! He didn't hurt you, did he? I was gonna explain everything when you woke up but... yeah..."

"No, he didn't. He was the last person I expected to see when I woke up, though."

"I know. He euhm... He told me. My... My father was the other Hunter. The one who let you go. Which surprised me 'cause my father isn't exactly known for his merciful nature."

"Your father..."

Of course. That's where she heard that name before. It was John Winchester who stopped his partner, Bobby, from killing her after the 10th plague took place. But then... This feeling she had with Dean... Was it...? No, it couldn't.
She eyed him as he got up from his chair and paced the room. Suddenly he was shoved hard against the wall. Allegra was on her feet in less than a second, knife at the ready, but froze when she recognized Castiel. He had his hand pressed over Dean's mouth, looking from Allegra back to Dean. The Hunter nodded slowly, prompting Allegra to lower her weapon. 
Castiel let go of Dean and drew a knife across his forearm. He smeared his own blood on the wall, drawing a rune or sigil. At that moment, Zachariah appeared in the room and took in the scene. He was fuming.

"Castiel! Would you mind explaining just what the hell you're doing?! And how did you get here, missy?!"

But Castiel ignored the other angel. He finished the sigil on the wall and slammed his hand at the very center of it. Zachariah disappeared in a flash of white light, screaming.

"He won't be gone long," said Castiel. "We have to find Sam now."

"Where is he?" asked Dean.

"I don't know. But I know who does. We have to stop him, Dean. From killing Lilith."

"But Lilith's gonna break the final Seal."

"No, Dean," said Allegra. "That's what I found out. They've been manipulating Sam from the beginning into killing her. Lilith is the final Seal."

Dean's eyes flashed from Allegra to Castiel. 

"She dies, and the end begins," said the angel, confirming Allegra's words.

"Dammit!" Dean cursed loudly. "Okay, what's the plan?"

"You guys go, I'll keep the angels occupied," said Allegra. "I can draw Zachariah here so that he won't get in your way."

"No, it's too dangerous, and you're still weak from..."

"I'm strong enough. Now go and stop Sam before he gets to Lilith. Kill that Ruby-bitch while you're at it."

Castiel stretched out his hand, but Dean didn't take it. 

"Be careful, Galen," he said.

"Right back at you, Winchester." 

Castiel grabbed Dean's wrist and disappeared with him. Allegra quickly carved a summoning rune in her hand and then took a couple of beer bottles, which she smashed on the floor. The liquid spread everywhere, just like she wanted. She already knew just how she could keep the angels in the green room. With the stage set, Allegra pressed her hand against the wall, and no less than seven angels appeared in the room. Zachariah stood closest to her. He shook his head at her and chuckled.

"My dear, you are wasting your time. It's inevitable. The final Seal will break, and Lucifer will be freed from Hell. Then you and the Winchesters will be called on for the next phase of this grand plan."

"We'll see." Allegra glared at him.

"You've already fought us once, Allegra. We took it easy on you then because you are still destined for great things. Do not push me, girl."

Zachariah attempted to move toward her but couldn't. Surprised, he looked down at his feet. Or better, at where his feet stood a minute ago. Now all he saw was blood. A river of blood, running from one side of the room to the other, was slowly but certainly swallowing him and the others. Allegra was glad to see they were mortified at what was happening. 

"You should really pay more attention to where you decide to stand when you enter a room. The extra stickiness comes from the beer that you so generously provided."

"You DARE use your powers against us?!" Zachariah fumed. "We angels have always provided for you, and you turn against us?!"

"Against the Angels? No, I know there are good ones amongst the rotten apples. Against you, though? Hell yeah."

Allegra clasped her hands together, holding them out in front of her. The little creature appeared instantly. She grinned.

"Do you know what it's like to go up against a swarm, Zachariah?"

She slowly unfolded her hands to reveal a locust resting on the palm of her bloody hand.

"Wanna find out?"

The angel turned as white as a sheet as Allegra blew the locust in his direction. As soon as the little animal landed on his shoulder, thousands flew into the room. They came out of the walls, the ceiling, the part of the floor that wasn't covered in blood... The locusts swarmed around the seven angels, who tried to shield themselves by wildly waving their arms. But their movements only made them sink in the blood faster, and the locusts didn't even need to land on them to take a bite. Normal locusts posed no real harm, but these were far from normal locusts. And with Allegra willing them to attack, there was nothing the angels could do.
Screams filled the room. Two more angels appeared, away from the blood this time, but they met the same fate as the others. Allegra tasted blood in the corner of her mouth and realized her nose was bleeding again. She had to leave and hope the locusts would keep them occupied long enough after she was gone.

With a final glare at a raging Zachariah, Allegra disappeared from the room and landed in a meadow somewhere. She rolled on her back, trying to catch her breath. Escaping the green room had been her last trick. 
Allegra tried to get up but was forced down when a sudden tsunami of voices flooded her. The angels buzzed in her head, growing louder and louder each second. The chaos was overwhelming, and Allegra felt herself slip away. This could only mean one thing; the final Seal was broken. Lucifer was free.