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CHAPTER 6

"What do you mean his sister?" Dean all but shouted as he pulled the Impala into the library parking lot. "I though he only had one sibling, and last I checked they were both supposed to be in The Pit."

"Dean, you should not make assumptions. You assumed Michael was in The Pit and yet he is actually right here." Castiel said impatiently.

"Are you saying that they're both out?" Sam asked.

"Yes, that is what I am saying." Castiel sighed, "They both showed up in Haven a few minute ago."

"Wait, they're both here?" Dean shouted in alarm.

"So it would appear."

"Do you think this has something to do with Audrey," at Castiel's glare Sam realized his mistake, "I mean Ariel, do you think it has anything to do with her?"

"Perhaps." Castiel answered glancing toward the bench Michael was sitting on.

"Maybe we should just ask him." Sam said nodding towards the sitting man, but as soon as the words left his lips the angel stared at the Impala and disappeared.

"Or not." Dean said with a chuckle.

"This is no laughing matter, Dean." Castiel said sternly, "with Michael here Lucifer will not be far behind."

"Why would he be following Michael around?"

"He would not be following him. They have both been searching for Ariel for centuries, if not longer."

"Why?" Sam asked, genuinely curious.

"Because she is their sister and she would do anything to protect her brothers. She would die if it would somehow provide her brothers with some form of protection. When Lucifer fell she soon followed in an attempt to protect him from himself. He did everything in his power to kill her, he set all the powers of Hell after her and eventually he caught her. She surrendered without a fight and when she was before her brother, kneeling before him as he held a sword to her throat she knew she had succeeded."

"How do you win a fight when you're defenseless and at the mercy of the enemy?" Dean asked skeptically as he interrupted Castiel's story, "No offense Cas, but your story is starting to sound just like that, a story. A tall tale you tell little baby angels in order to get them to sleep."

"There are no baby angels, Dean." Castiel said confused by Dean's remarks, "we are created, not born."

"We know," Sam said giving Dean a look that clearly said 'shut up', "please continue Cas."

"As I was saying," Cas started, glaring at Dean, "her goal was not to win a fight against her brother, but to save him from himself."

"And how did she do that?" Dean asked, irritated by Cas's long and apparently pointless story.

"She died." He answered calmly.

"What do you mean she died?" Sam asked. "We just saw her earlier, you even said it was her."

"I said she was the angle of protection, her brother needed protection, she protected him the only way she knew how and let him slit her throat. Her selfless act brought him back to his senses, he was horrified by what he did, so distraught that he was going to kill himself. The fact that he need to be protected again brought her back and she took his weapon away. She told him she would never die, so long as someone needed to be protected her soul would never rest peacefully. She made Lucifer promise that he would look out for Michael because she would not be able to protect them much longer, and that was the last time she was seen." Castiel finished.

"And so she's been missing for centuries, and her brothers didn't listen to her last request?" Dean asked.

"No, they listened to her. They have been protecting each other ever since."

"Cas," Sam said, "that doesn't make any sense. They've been trying to kill each other."

"No, they are bound together. You cannot capture or kill or even hurt one of the brothers without doing the same to the other."

"What are you talking about?" Dean asked.

"Before she left Ariel made her brothers promise to take care of each other. They promised to protect each other in such a strong way, they became bound. That is why in order to put Lucifer in The Cage, Michael also had to be put in there."

"So how come Ariel didn't show up when we captured them?" Sam asked, "I thought you said she would protect her brothers no matter the cost."

"I am sure you and I would be dead right now if she felt that her brothers were in serious danger." Castiel said calmly.

"Oh…then what's Michael doing looking for her?" Dean asked.

"Why don't you ask him." Castiel replied as the angel in question joined him in the backseat.

"Castiel, why did you not tell me my sister was here?" Michael asked seething with rage.

"I only found out a few minutes ago." Castiel answered calmly defending himself.

"Do you know why she has no memories of me?"

"I do not know." Castiel answered sadly.

"What is she even doing here?" Michael asked changing the subject.

"We don't know," Dean answered, "but we're going to the library to do some research."

"We think she was summoned," Sam supplied.

"That would explain a lot. Ariel would do anything to protect a person, even if it was self-sacrificing and borderline insane."

"Apparently she would also kill a Reverend in order to protect some cursed kids." Dean said, still unable to wrap his mind around that fact.

"That sounds like her," Michael said with a smile as he disappeared from the Impala only to reappear outside the car an instant later, "come along. I will aid you in your research."

He turned and walked toward the library, he did not need to turn around to know that the brothers and their pet angel were following him.