It wasn't until they'd vacated the tunnels that Sadie realized something was very wrong. Dean was moving well, not at all like a man who'd been beaten nearly half to death and starved for almost a week. But what really got Sadie's attention was that once they were outside, in the bright mid-day sun, the light didn't seem to bother Dean's eyes. Even the hunters that had been down for just a few minutes were moaning at the brightness and reaching for sunglasses. Everybody – except Dean.

The group had begun to disband, as was previously agreed, but just before she and Dean reached the Impala, Sadie stopped walking. She drew her gun and before any of them knew what was happening, Sadie turned to Dean. The shotgun full of rock salt bullets was pointed right at his chest.

"Sadie! What the hell?" Sam shouted when he saw the gun in her hand.

"He's not Dean!" she called over her shoulder at Sam. Her eyes turned back to Dean. "You're not Dean," she said quieter as she stared into the eyes she knew as well as her own. What she saw reflected there was very different this time, though.

Dean stopped when he saw the gun in her hand. The smile that grew on his busted and bruised lip was anything but sweet. The evil glint in his eyes flashed brightly just before the eyes turned into a shiny pitch black. Even through the one eyelid that was swollen nearly shut, the blackness was there and unmistakable.

"Why, Sadie. You're more perceptive than I thought. It was the way I walked that gave me away, wasn't it?"

It was Dean's voice, albeit strangled a bit from the abuse of the physical body, but the menacing and evil tone of his voice sent chills down Sadie's back. "Who the hell are you?" she spat out.

Deans lips turned over from the smile into a pouty frown. It wasn't possible for his demonic eyes to show emotion of any kind, but the being inside of Dean raised Dean's hand to his chest, just over his heart. "Oh, Sadie. I'm crushed! You don't recognize me!"

Sadie stared at the man before her, seeing nothing but Dean's features contorted in a dark and evil manner that she'd prayed she'd never have to see. Her eyes narrowed as a feeling she hadn't felt in years began to creep up her spine. Her body gave an involuntary shudder as she locked eyes with the demon inside of Dean. Her body froze and her hand on the gun twitched with the desire to fire the weapon right now.

"Caleb," she whispered as her eyes narrowed to little more than slits.

The smile that grew on Dean's lips was the kind that is written about in horror novels and depicted in demonic movies. The black eyes beamed as they looked at Sadie. "Oh, Baby Sis. You do remember me!"

Sadie cringed at the name he called her. She had fought for years to keep herself hidden from the one before her, and now, here he was.

"I knew I'd find you, Sadie. It was only a matter of time before you or one of the dopey Winchester boys slipped up. I knew it. It was never really an issue of IF I would find you – it was only a matter of WHEN."

Dean screamed from inside his own head, but he knew that it was useless. No one could hear him. How could he possibly have known that Caleb was the one behind all this? And yet, how could he not have known?! He was angry at himself as much as the dark being that currently possessed him.

Caleb moved Dean's body a step closer to Sadie. He knew she wouldn't really pull the trigger. Sure, it was just rock salt in that gun. Even Caleb knew that. But even still, at this range, even rock salt could be deadly to the already overly damaged body he currently sported. "You won't pull the trigger and you know it." His voice was deep, deeper than Dean's usually was. The black eyes disappeared and Dean's soft hazel color returned. "Look me in the eyes, Sadie. You won't hurt Dean. He's still in here, you know? He's been screaming for the last twenty minutes, but I wouldn't let him be heard."

Caleb closed his eyes and breathed in deeply, almost like he was smelling of something hellishly delicious. "His fear has a very unique scent to it. Must be all that time he spent in hell with our father." Sure, Caleb knew as well as Sadie did that their father was dead. That was the whole reason Caleb had been so diligently searching for Sadie all this time. "Oh wait… our father is gone, Sadie. It was you that killed him, you know? Your defiance against him. He was dead long before he was actually destroyed. But you still have the chance to make it up to him. You can still honor your poor, dear father, Sadie."

Sadie felt the bile rise up in the back of her throat. Her "defiance" against her father had been her choice to live her life as a human rather than the leader of the demonic army that her father had wanted her to be. Being half demon and half human, Sadie had powers that no other possessed, save for Lucifer himself. She was able to do more than any demon alone could do, and they all knew it.

Caleb had more than once resented her for what she had to offer their father, and he hated her even more when she'd left the family. Despite his loyalty, their father had never seen Caleb as more than just a bastard son, unwanted and unloved. Sadie was the real prize, the real gem. Caleb despised her. He also knew that he needed her. If Lucifer's army had any hope of actually defeating the angels and ruling the world, Sadie was the key.

"Fuck you," Sadie snarled. She leaned back and using all her strength, hit Dean's head with the butt of the gun. Caleb stepped back just long enough to allow the real Dean to feel the brunt of the force from the hit, and not himself. He laughed wickedly inside Dean's body as Dean screamed out as he was shoved to the forefront of his own damaged body.

Dean's body crumpled to the ground, but the minute his face hit the ground, Caleb again took over. He opened his black eyes to look at Sadie, and the laugh that escaped the man's body was the most inhuman sound any of them had ever heard.

"You won't win, Sadie. You will fulfill your destiny, and you'll do it willingly. You just don't know it yet."

A horrible, other-worldly scream was emitted from Dean as his head was thrown back and a plume of black smoke, dark and swirling, flowed through Dean's open mouth. The act took only seconds, but to Sadie, and even Dean for that matter, it felt much longer. The black cloud that was Caleb's current form disappeared before any of the hunters present were able to even comprehend what they were seeing. Dean's broken and battered body lay motionless on the ground at Sadie's feet.