"What the hell does that mean?" Dean demanded. 

Percy sighed. Sam could tell that the demigod was reluctant to share his dreams with the brothers, but they needed to know.

"I mean," Percy stated. "That when I first met them, they told me what was going on."

"Wait, hold on." Sam raised a hand, signaling Percy to pause. "You still see them? And you didn't bother to mention this to us?"

Percy had the sense to look guilty. "I didn't want to worry either of you, so I thought that I could keep this to myself. And look how well that went," the demigod added bitterly.

Sam felt bad when he saw Percy gaze sadly up at him. It made him feel like he had left a helpless baby seal to fend for itself in the wilderness.

"Percy." Sam sighed. "It's not your fault. We understand why you hid something this huge for a reason. I mean, Dean and I do it all the time."

"Basically every year," Dean mumbled under his breath. 

Sam shot his brother a look before returning his gaze back to the demigod. Percy looked like everything had been taken from him and Sam could relate to the young teen.

"But why would Tartarus send you to the Cage?" Sam refused to shudder at the name. It's been almost five years since he's been released from the Cage, yet he still has nightmares from his time down under. "What does he get from sending you down there with them?"

Percy shrugged helplessly before yawning. "Beats me."

"Alright," Dean concluded. "Why don't we get some shut eye and finish this later?" Apparently, Sam wasn't the only one who noticed the sleepy teen.

"What?" Said teen questioned. "Why? This is kind of important, don't you think?"

"For starters," Dean answered. "It's been a long day, despite the fact that it's only," he checked his watch, "eleven o' clock. Secondly, you can barely keep your eyes open. You're tired. And not to mention the fact that you were almost mauled to death by those bitches earlier, which can't be good for your health."

"Yeah, okay," Percy reluctantly agreed, yet he still sounded unconvinced. Dean must've picked up on it because he tossed the demigod some pills, from where Sam had no idea. "Take them. Might help you sleep for a few hours, anyway."

Percy eyed the pills warily before slowly popping the cap off and dumping two of the small medicine into his palm. Sam was going to ask if he wanted something to swallow them down with, but the teen swallowed the pills dry. 

The demigod laid down on his bed and shut his eyes. Neither Sam or Dean moved from their spots until they were certain that Percy was well and truly asleep.

Once Percy's breathing evened out, the brothers quietly removed themselves out of the room and into the hallway, Dean closing the door softly behind him. Silently, Sam and Dean went over to the library and sat down, each thinking over about what had transpired in the past half hour.

"Dean..." Sam quietly began. "If Percy met Michael and Lucifer, then he probably know about-"

"I know," Dean interrupted, his voice just as quiet. He got up and went over to the minibar, grabbing two beers and handing one to Sam. "We just need to figure out why," Dean continued. "I mean, what's the point in sending Percy to the Cage? To torture him? To get revenge?"

Sam was listening, he really was, but the information was refusing to stick to his brain. All the words Dean spoke were just flowing out his other ear without his saying so. All Sam could really focus on was Lucifer. Freaking Michael and Lucifer? Seriously?

Sam should've known that Percy was having dreams about Lucifer. All the signs were there. Granted, even if the demigod wasn't dreaming about the Devil, he should've known that something was off about the teen.

That could be why he was receiving the wounds, Sam thought to himself. "Why didn't Percy tell us about his dreams beforehand?" The words were already out of his mouth before Sam could even think about them.

His brother froze where he was, pacing back and forth as Sam was thinking.

"We did meet the kid, like three days ago, Sam," Dean gently reminded, before frowning himself. "After all, you don't just come up to random people and tell them you've been having these weird dreams about the Satan and his brother torturing you in your sleep. That'll give you a one-way ticket to the crazy house."

Noticing Sam's uncertain expression, Dean continued speaking. "Or he was probably thinking that we've had a lot on our plates the past few days and he felt like he shouldn't be bothering us with his crap."

Sam looked up at his big brother, shock and curiosity shining in his eyes. "How do you know that?" He asked Dean.

His brother shrugged. "Simple," he answered. "It's what you would've done. Hell, you have done it. And so have I. It's not that hard to figure out."

Sam glanced ashamedly down at the floor. He still hadn't told his brother what had happened at the hospital. Granted, there was a lot happening from just the past eighty-four hours, from Dean killing Death to Sam taking the Mark off his brother to finding a cure and finishing the week off with meeting Percy and discovering a whole new world. But he knew that if he didn't tell Dean what happened then it will come back to bite him on the ass.

"What if they're teaming up?" Sam thought out loud. He knew he should've told his brother, but Dean was finally calming down after the fiasco with Percy and the reptile ladies and Sam didn't want to upset his brother so soon.

Dean stared at him. "What?"

"What if Tartarus is teaming up with Michael and Lucifer?" Sam asked, deciding that he'll tell Dean what happened at the hospital at a later time. "What if they're planning something that no one expects to happen?"

Dean snorted. "Then we would have some serious shit going down."

"Dean." Sam replied, his fear showing through his expression. His brother quickly sombered and sat down in the chair across from Sam.

"Sam." Dean parroted in all seriousness. "Even if there was a way that Michael and Lucifer were somehow planning something huge with Tartarus, I don't think there is any possible way that we could know for certain how, or what, those three bastards are planning."

Sam nodded, but he was still dubious. What if they're somehow planning to break out of the Cage? What if Tartarus could somehow break the Cage and release Michael and Lucifer? What if those three are planning to destroy the world? What if they decided to team up with the Darkness? What if what if what if what if what if-

"Sam?"

Sam whipped his, what is no doubt terrified, eyes to meet Dean's concerned ones. "You okay?"

Sam forced himself to take a deep breath and slowly let it out. "Uh." He cleared his throat a few times. "Yeah. Yeah, I'm fine."

Dean narrowed his eyes, but surprisingly didn't push the topic, which Sam was grateful for. He knew that his brother knew that he still has nightmares about the Cage from time to time but what his big brother didn't know is that every time that Sam abruptly woke up, he would stare at the ceiling in complete darkness and pondered the thought if he should've been left in the Cage.

Because now with Dean fully back from almost killing his kid brother from the influence of Death and the Mark of Cain and Sam miraculously surviving the virus he received from one of the infected, they had no time to slow down and talk to each other about how the other felt.

Even now, Sam felt that, with everything happening. it was somehow his fault. After all, if Sam hadn't gotten so upset with Dean about saving him, then maybe Dean wouldn't have teamed up with Crowley and get the Mark in the first place. Then he wouldn't have turned into a demon and he wouldn't have killed Death and Sam wouldn't have released the Darkness.

Or gotten Charlie murdered, Sam sadly thought. 

But now, Heaven's Most Powerful Archangels might be showing their faces again, along with a primordial god.

Hooray.

Okay, so that last bit may not be Sam's fault, but it was still his responsibility to stop them from destroying the world. And he won't let Dean down again. He straight out refused.

Sam's brain kept jumping between the sheer terror of failing Dean again to confessing about the events from the hospital to the archangels and Tartarus teaming up. His mind couldn't keep up from all the jumbled thoughts that kept running through his head. Sam felt the walls closing in, as if they want to suffocate him and he can't breathe oh god why can't he breathe-

Sam quickly stood up from his chair, making Dean startle at the sudden movement.

"I'm, uh, going to bed," Sam muttered, then rushed out of the room before Dean could make a comment. 

Sam forced himself not to run and instead compromised to a brisk walk to his room. He shut the door behind him and flopped on his bed, his back laying on the mattress. He trained his eyes on the ceiling and tried to calm his nerves. It's amazing how easy fear can overcome a person when they know that they have everything to lose.

Sam sighed and covered his eyes with his hands. From thinking about Dean's reaction when he heard Sam's secret to Michael and Lucifer teaming up with Tartarus to losing Dean brought Sam little sleep. He just stayed up until, his eyelids slowly closed, encasing Sam in total darkness.