"How could they have gotten through?" Castiel asked.
"I don't know... unless Moriarty made it possible for them to bypass the demon traps." Molly replied.
"And how-?" Dean began.
"I don't know."
"We need to figure this out, but I don't know how. This is way beyond my knowledge. And trust me, I know a lot." Sherlock said.
"Just because you're the brother of a hunter doesn't mean you know everything." John said as he rolled his eyes.
"Maybe I'm something more."
"Like what and angel?" John.
"Yes." Sherlock shouted. It grew silent in the room.
"Wait, are you serious?" Sam asked.
"Yes."
"And what are you two? Werewolves?" John asked Sam and Dean.
"Nope. Sam and I are human. Just hunters." Dean replied.
"It doesn't matter what we are. What matters is that we have a common enemy. James Moriarty. I know that Sam and Dean have only been here for about a day, but it's a demon. We all want to get rid of demons. I know that it is hard and I know that we are different beings, but we have to work together. If we don't, James will know how to target you. And he will. And he will kill you. I know what he is like and you do not want to take him on your own." Molly said. There was silence again.
"She's right," Sherlock said, "We need to work together. If James can make it so demons aren't affected my demon traps, then we would get crushed if we were by ourselves."
"Then what's the plan?" Castiel asked.
"Do you still have the colt?" Molly asked.
"How-" Dean started.
"Yes, we do," Sam said, "It's-"
"Don't tell me. If James captures me he'll be able to get that out of me. So don't tell me."
"He won't." Sherlock said.
"You don't know that." They starred at each other. Dean cleared his throat.
"We should probably take watch every night. We don't want another surprise." He said.
"If we are doing that, I'll take first shift. All of of you need to get some sleep." The consulting detective said.
"What about you?" Castiel asked.
"I don't sleep."
"It's settled then." The elder Winchester said. Then he went into the guest bedroom. A few minutes later, they all heard him snoring.
"I should probably be getting to bed as well." Sam said as he too went to the bedroom.
"Are you sure you want to be alone?" Molly asked Sherlock.
"I'm fine. John go back to the flat."
"Hell, no. I'm staying here." John replied.
"Think about Molly. She won't have enough room."
"Oh no, it's fine. You can sleep in my bedroom. I don't really sleep either, I'll just go for a walk." And at that she disappeared.
"Well, I guess I should go to bed." John said. Sherlock didn't say anything. "Very well then, night."
Sherlock just stared into the distance.