"Sam, may I ask you a question?" Castiel asked as he and Sam made their way down the stairs. Eliza had disappeared somewhere in the Bunker but neither Sam nor Cas cared enough to look for her.

"You just did," Sam replied jokingly.

"Can I ask you another question?"

"Well, technically, you — yeah, go ahead. What's up?" They stopped in the doorway to a hall and faced each other. Cas sighed.

"Sam, the trials. You chose not to go through with them for a reason, didn't you? You chose to live rather than to sacrifice yourself. You and Dean... You chose each other."

"Aww, how cute," Eliza cooed mockingly as she returned from her little adventure. Sam rolled his eyes and it was clear that he didn't want to talk about the Trials. Not only did they mess him up, they killed Libby.

"Yeah, I did. We did. And then... Dean made a choice for me." Sam stalked off to the medical room, Castiel following right behind him. Eliza crossed her arms over her chest and decided to join them. She hadn't yet found what she was searching for but she knew it was somewhere in the Bunker. She had all night to look for it.

"What Dean did—"

"It doesn't matter what Dean did. Look, I could have put a stop to all this, Cas. I could have closed the gates of hell," Sam argued.

"Oh, Sam."

"Dean's gone, okay? This is on me now, and if I can find Gadreel... I can fix this." Sam set a metal box down on a table next to a blue gurney. Eliza watched with raised eyebrows as he slipped off his plaid button-up, setting it on the table where the box was. Her gaze drifted to his arms. She could definitely say that that was one thing she had missed when merged with Libby. "Now...being a human means settling your debts." Sam handed the box to Cas and sat down on the gurney. "Let's start balancing the books." Cas opened up the box and pulled out the syringe, eyeing it warily before looking up at the Hunter.

Eliza knew that Castiel may not be able to go through with all of it and get all of the Grace left. As much as she didn't want to, she knew there was a point where she'd have to take over. The angel had gone soft for the Winchesters. It was his weakness for even the smallest things.

Cas turned Sam's head to the side to give him room for the needle. The angel pushed it in, Sam cringing and gritting his teeth in pain. "Now comes the part that will actually hurt. I'm gonna begin the extraction." Sam's breathing was heavy and he constantly glanced between Cas and Eliza. Eliza stood off to the side, watching with interest.

"Is it working?" Sam gasped out. Cas sighed.

"Yeah." Sam noticed his hesitation, as did Eliza.

"But?" Eliza pressed, taking a step towards them. Sam reached out and gripped her hand, catching her off guard and making her jump slightly. He never noticed. She understood the pain he was going through so she let it happen.

"I-I need to push the needle in deeper. We need more Grace in order to cast the spell." Sam sucked in a sharp breath, keeping himself from nodding.

"Okay. Do it."

"Sam, if I get too close to—"

"Damn it, Cas! Just do it," Eliza and Sam snapped at the same time. Castiel slowly pushed the needle in deeper and started to extract more Grace. Sam's body jumped, flashbacks of his time as Gadreel flooding his mind. His grip on Eliza's hand became tighter and she swore that he was cutting off circulation. Castiel pulled out the needle, Sam gasping for breath. His free hand shot up to his neck, clutching the spot where the needle was inserted.

"What the hell was that?" the Hunter asked breathlessly.

"Your body is regressing to the state it was in before Gadreel," Eliza explained, Sam's grip on her hand loosening slightly.

"Do we have enough Grace for the summoning spell?"

"Sam."

"Do we or not, Cas?" Castiel sighed and locked gazes with Eliza.

"No."

"The keep going," Sam insisted. Eliza's eyes widened and she looked down at the Hunter.

"I can't," Cas said, taking a step back. Sam glanced up at Eliza with pleading eyes. She shook her head, getting the message clearly.

"How can you trust me to do this? You barely know me, Sam," Eliza reasoned. Sam shook his head and sighed, finally catching his breath.

"I do know you, Eliza. You're Elizabeth, remember? The only difference is that you're just her dark parts. You have all of her memories. You know us. You remember us. I know I can trust you. Please, Eliza," he begged. Eliza looked up, frowning slightly, and gazed at Castiel who shook his head. She sighed and hung her head. "Eliza, please." The redhead released his hand and walked over to Cas, snatching the needle from his grasp. Cas reached out and grabbed the needle, both of them holding onto it with death grips.

"Eliza—"

"Can it, Feathers. I'm just doing what the Hunter wants me to do. You want to catch Gadreel and make him pay?" Castiel nodded. "Then let me do this." Cas reluctantly let the needle go and stepped back, watching and ready to jump in if anything went wrong. Eliza positioned herself next to Sam and looked down at him with a sympathetic expression. He nodded and turned his head back to the side. "I'm so sorry," she whispered before sliding the needle in effortlessly. Sam let out a yell of pain, clutching the seat.

"Sam? Sam?" Eliza asked after a minute. His eyes had closed as she continued to extract Grace. His eyes fluttered open.

"Keep going," he rasped out weakly. She shook her head.

"Why?"

"We—we—we have to find Gadreel," he replied. She started to remove the needle from his neck.

"No. Why must the Winchesters run toward death?" Sam gripped the syringe in Eliza's hand, stopping her from removing it. She wanted to roll her eyes but couldn't bring herself to do it.

"No, don't. Don't. Don't stop."

"Sam, when I was whole, I died, and that showed me that life is precious, and it must be protected at all costs, even a life as... as pig-headed as a Winchester's," Eliza told him. She sighed. "Stop being stubborn and let me stop. As cold and evil as I may be, I don't want you to die. I can't let you die." Her voice seemed to crack at the end and Cas furrowed his eyebrows at it. How was Sam not seeing how much Eliza felt for him? It was clear as day.

"My life's not worth any more than anyone else's—not yours or Dean's...or Kevin's. Please. Please, help me do one thing right," Sam told her, his voice soft. It was so soft that if Eliza didn't have inhuman hearing then she wouldn't have heard it. "Keep going." The demon hesitated but nodded, pushing the needle in further. This time the scream was louder and Cas swore he saw a tear threaten to fall. Eliza wasn't just a demon. She had feelings just like any other human.

After a few minutes Eliza found herself glancing around the room. Her green eyes settled on the sandwich that she and Cas had been eating earlier. She remembered life like a human and how important it was. "Hold on. This may pinch," she said, positioning two fingers on either side of the needle and pulling it out. Sam's eyes snapped open.

"Eliza, what the hell?" She pressed two fingers to his forehead, healing him. Castiel's eyes widened. He didn't know how it was possible for her to do that. Even while Libby couldn't heal anyone. "What the hell was that?" Sam exclaimed, sitting up and clutching his neck. There was no wound there.

"I've healed your wounds completely. A bit of angel was still left in me when she was cast out," Eliza said.

"And the Grace?"

"Well, whatever Grace was inside you is gone now. What's left of Gadreel is in here. We'll just have to try the spell with what we have," the demon explained as she carefully brought the Grace-filled-syringe over to its metal container. She set it inside gently and closed it.

"Damn it."

"Sam," Castiel said. "I want Gadreel to pay as much as you do. But nothing is worth losing you. You know, being human, it didn't just change my view of food. It changed my view of you. I mean, I can relate now to how you feel."

"What are you talking about?" Sam questioned.

"The only person who has screwed things up more consistently than you...is me. And now I know what that guilt feels like. And I know what it... I know what it means to feel sorry, Sam. I am sorry." Sam nodded, his gaze drifting to his lap.

"I know."

"You know, old me—I would've have just kept going. I would've jammed that needle in deeper until you died because the ends always justified the means. But what I went though—Well, that PB and J taught me that angels can change, so...who knows? Maybe Winchesters can, too." Eliza smiled to herself at watching the Hunter and the Angel. She knew what Castiel was like her first year out of Hell. He wasn't as kind as he is now. He was ruthless and would do whatever it took to defeat Lucifer. But so was Libby.

Eliza walked over to Sam and placed a comforting hand on his shoulder. His gaze drifted to her wrist and grabbed it, eyeing the red scar. It wasn't like anything he'd seen before, but Cas knew what it was. He bit his tongue and kept his mouth shut. That was the least of their worries.

"What is this?" Sam asked. She glanced down at the scar, her face paling slightly. She hadn't noticed it before. She hadn't had that scar since before her banishment. Only two people could hold the scar, those two being connected.

"Oh my god," she whispered, her eyes widening. She clutched her wrist and raised it higher to get a better look at the scar. It wasn't just any torture scar. It was the Mark of Cain. If it was on her then that meant someone else now held the scar. Someone who wasn't The Darkness. "Oh, you bloody idiot! You promised me," she hissed under her breath. Eliza snatched her arm from Sam's grasp and started to walk away.

"Where are you going?" Sam called out.

"To pay a visit to an old friend," was all she replied with before disappearing into thin air.

Eliza landed on a porch of an older house. She could faintly smell blood, so she knew that something had obviously gone down. Glancing behind her she saw the Impala retreating.

"Oh, no. Dean, what have you done?" The door flung open and she gasped, spinning around. Cain's eyes widened and he took a step back, his body covered in blood. Eliza eyed him from head to toe, taking in his appearance. She didn't even want to know the amount of bodies in the house.

"Elizabeth? I was told you were dead." Scowling, Eliza grabbed onto Cain's shoulders and slammed him against the wall of the house. "Not Elizabeth." She nodded her head to the side.

"Half of Elizabeth. Now what the hell did you just do?" Cain furrowed his eyebrows. He wasn't sure how she knew already. Eliza rolled up her jacket sleeve and held up her right wrist. "It's back and the only way that happens is if you transfer the Mark to someone worthy. Who did you transfer it to and why?" she growled. Cain gulped, staring down at her.

"Dean Winchester. He needs to kill Abaddon. I presume he doesn't know you're alive considering he didn't mention you once." Eliza furrowed her eyebrows. "I get the gossip, Elizabeth. I know you've been running with the Winchesters, but I also know that you died during The Fall." She shook her head, letting him go and taking a step back.

"I was brought back, but my soul was split into two. Archangel and—"

"You're the demon half," he whispered in realization. She nodded. "If your soul isn't whole then how are you in that body?" She tugged her sleeve down and rolled her eyes.

"Vessel. After I was banished God decided to make doppelgangers of me. I suppose he missed me." Cain chuckled slightly. Elizabeth had always been a favorite. "Nadia has Libby. I'm not looking to merge with her, but I am looking to kill Nadia. Any chance your gossip radio knows where she is?" Cain shook his head.

"No. I'm sorry." Eliza let out a sigh of defeat and nodded, glancing around. Cain narrowed his eyes at the redhead. "You were with the other Winchester."

"What? How do you—"

"You reek of angel." Eliza scoffed. Of course he knew that Castiel ran with them. "You're helping them? And they're letting you?"

"Correction: I'm helping Sam and he's letting me. Dean doesn't know and he can't. As much as I love my body, I might need to find a new vessel." Cain eyed her wrist before shaking his head.

"No. That Mark locks you in Katherine." Eliza scowled, her fists clenching at her sides. "But you could always change you hair. I hear blonde is in style," he joked. Eliza raised an eyebrow up at the Knight.

"You've always had a sense of humor. I know you didn't get it from my father. He lacks one." Cain chuckled.

"You've had many father figures, Elizabeth. It's odd how you're not like any of them," Cain noted. Eliza shook her head, crossing her arms over her chest as she leaned against the doorframe.

"I've had three which isn't a lot. And you're wrong."

"Oh?"

"I've been told I'm a lot like Gabriel." She smiled slightly when his face popped into her mind. He had always been her favorite out of all of the angels. "Besides, why would I follow the Devil and a Knight of Hell?" She closed her eyes and leaned her head back, relaxed.

"You and Dean Winchester could take down Abaddon easily. With the Mark and you being equal in power to us, it'll be a piece of cake. Just imagine the feeling of her blood on your hands. The feeling of the First Blade or your Sword being driven through her chest. The victory that you would have," Cain told her, seeming to enjoy the visual himself. Eliza's eyes snapped open in realization and she straightened her posture.

"My Sword," she whispered. She threw her arms around Cain in a hug. He awkwardly hugged her back, not expecting the sudden gesture. He knew that they had always gotten along down in Hell but he couldn't recall a time where she had hugged him. "Cain, you're a genius. Thank you."

"You're welcome?" he said just as she disappeared into thin air. He let out a sigh and glanced back into the house, groaning at the pile of bodies.