"I think I'll be able to. I've had a chance to recover a little bit, and this hand of god is a wonderful idea." Cas answered, something about him still confusing you. "I will transport the two of us back in time, where we can retrieve this valuable item."

You still felt as if something was off, but you were just as eager as Sam and Dean to find a way to take care of Amara once and for all. Even if that meant ignoring the sinking feeling deep in your gut.

"Cas, let's get this going." Dean insisted, clapping his hands together, missing the frown that stayed on your face.

"I'll get the ingredients for the spell." Sam spoke up, leaving the room. Dean and Cas continued to talk at the far end of the table, leaving you to stand there, unsure. Sam came back, his arms full of ingredients, and Cas smiled, a smile that you had sworn wasn't his. When he caught you staring at him, he winked, before turning to the Winchester brothers, ignoring you.

Standing there, you watched as they worked, mixing and grinding ingredients. "Alright, let's get this started!" Cas exclaimed, grabbing Dean's shoulder before the two of them suddenly vanished, leaving you standing there, hoping that nothing would go wrong.

"Sam, I don't have a good feeling about this." You told him as he began cleaning up the mess from the spell. "Didn't Cas seem different?"

Before Sam could answer you, what sounded like thunder cracked right next to you, and Cas appeared. He was soaking wet, his trench coat completely soaked, drenching the tile floor beneath him. "Cas, what happened!" You exclaimed as Sam rounded the table. "Where's Dean?"

"Landing on submarine, years ago is tricky business. I guess this one was warded. Dean was able to get inside, but unless he breaks the wards, I'm out of luck." Cas explained.

"What's that mean for Dean?" You exclaimed, your voice raising an octave. "Is he stuck in the past? On a doomed submarine?"

"No, I have to go back. It's just complicated." Cas literally growled, surprising you.

Turning back to Sam, your eyes huge, you raised your hands, trying to get him to help you out. Running his hand through his hair, he turned to the Angel. "Do we have to do the spell again?"

"You guys just don't give up, do you?" Cas spat, his eyes narrowing as he glared your way. "Y/N here, she's smart. Probably smarter than both you and Deano combined. You figured it out, didn't you sweetheart?"

"I don't...I don't know what you mean." You stuttered as he stalked you much like a predator, moving so unlike the angel you were used to.

"Think sweetheart." He insisted, as your back slammed against one of the pillars, stopping your retreat. "You couldn't take your eyes off me. And I know Cas has some pretty blue eyes, but it wasn't because you wanted him instead of Dean, was it?"

"Cas, what are you doing?" Sam asked, rushing to help you, but with a flick of his wrist, Sam went flying into the wall. A crooked smile on his face, Cas leaned close to you, his arm pressing into the tile above you.

"I knew you were different. I wasn't sure what, but you didn't seem like the same Cas." You muttered, the evil glint in his eyes, the smirk on his face registering. You finally knew why it was bothering you so much. "Or should I say Lucifer?"

"Ding, ding, ding! We have a winner. And such a pretty one too!" Cas, or Lucifer exclaimed, leaning forward for a second. "I still don't get why you're with that doofus Deano. You could do so much better. Like me."

"What did you do to Cas?" You asked, seeing Sam struggle to get up in the corner of your vision.

"I didn't do anything. The man just wanted to help, and did it the only way he thought he could." Lucifer explained as Sam shakily stood to his feet. "He did what that Moose never had the balls to do."

"Cas, no." You whispered, hoping he was still in there. That somehow you could reach him.

"Now, let's see how I should finish this." Lucifer spoke mainly to himself, not noticing Sam as he started to move. "I could kill you and Moose, and then when Dean comes back, kill him as well. Keep the hand of God for myself."

"Why do you want it?" You asked, trying to distract him as Sam moved.

"I want to stop that bitch." Lucifer spat. "I want to be the one to kill her."

"I wish I believed that. You'll probably use its power to try and rule the world." You muttered, your eyes flashing to Sam. It was too much, and Lucifer turned around, growling when he saw Sam standing there, the Demon killing knife in his hand, a trail of blood slipping down his forehead.

"Moose, I have to give you credit. You're a tough one to keep down." Lucifer grumbled, before grabbing you and holding you against him. "But I know you. You won't do anything that would jeopardize Y/N. Besides, that's just like a fly to me. It doesn't kill."

"Leave her alone." Sam growled low in his throat, continuing to move closer to Lucifer.

"I don't think so. She's the perfect leverage. Dean will give anything up for her, and you wouldn't risk hurting a hair on her head." Lucifer chuckled.

Taking a deep breath, you kicked back with all your might, the heel of your foot slamming right into his privates. "Sorry Cas." You whispered, trying to pull free from his grasp.

Groaning, Lucifer's hold slipped, and you raced away, both you and Sam heading for the garage, as far away from Lucifer as you could. "I don't think so." Lucifer groaned, his hand cupping his sore member. "That hurt! I always heard it would, but I never thought it would be that painful."

Raising his hand, he slammed both of you into the walls, holding you high in the air. Kicking, you tried to get away, but Lucifer's hold was too strong. It felt like a fist around your neck, squeezing until black spots filled your vision. Closing your eyes, you hoped that Dean would find the hand of God, that all of this wouldn't be in vain.

"What's going on here?" Dean called out, and you opened your eyes to see him standing there, a petrified piece of wood in his hands. "Cas, what are you doing?"

Unable to speak, you shook your head as Dean looked confused. "Dean, it's Lucifer!" Sam was able to spit out, his words hoarse, turning into a groan as Lucifer tightened his hold.

Grasping the wood in one hand, Dean pulled out his gun, and Lucifer just laughed. "You Winchesters and your pathetic weapons."

Charging Dean, he let both you and Sam slip to the ground, your head banging on the hard tile. Lucifer tackled Dean, the gun flying across the floor, along with the Hand of God. Trying to clear the black dots from your vision, you glanced up in horror to see Lucifer standing there, the formidable weapon in his hands. "I've got it!" He exclaimed, holding tightly to it, closing his eyes.

Sam glanced between you and Dean, his eyes wide with fear as the two of you waited for your end. "Why's it not working?" Lucifer screamed, glancing down at it with frustration.

"I guess it's a one use and done." Dean explained. "I used it to get back here."

"No!" Lucifer cried, crumpling it in his hands. Turning to glare at the three of you, he raised his hand. "This isn't over." He promised, before vanishing from the bunker.