Disclaimer: I only own the mortals and plot. All of the other characters and stories belong to Rick and the CW.

Over the course of the next week, Klaus visited the Jackson apartment many times and vise-versa. He had grown to like Sally and Paul. Sally reminded him of an older version of Caroline. He was not even remotely interested in her in that way, but he enjoyed her company all the same. Sally was kind and caring, yet still determined, strong and definitely not a pushover. She and Paul seemed like a normal couple, but their son Percy was a different story. Klaus had noticed that he and his friends always seemed to speak in ancient Greek. Thankfully, Klaus understood the language, but what they said still didn't make any sense. They only spoke Greek when he was in human hearing range, but when he used his enhanced hearing, he still heard them saying the same things in English as they were saying in Greek. They would mention things such as the names of Greek and Roman gods and goddesses, demigods and monsters. He assumed they were just playing some sort of role playing game like Mythomagic, but it was still strange. One afternoon he and Sally were having some coffee in her apartment while Paul and Percy were still at school. Sally had been taking a little walk to deal with writer's block and Klaus had just been wandering when they ran into one another and begun talking. The two were in the middle of riveting discussion about the work of Charles Dickens (Klaus thought him to be masterful, but Sally said his writing was too dark for her tastes), and Klaus was in the middle of a sip of coffee when the door opened.

Both Klaus and Sally turned in the direction of the door and in walked Percy, Thalia, Annabeth, Will and Nico(hand-in-hand), Chloe, Jules, Max, Tucker and Rebekah. Sally was fine with this because she had a running open invitation to all of Percy's friends, but she was a little surprised. However, her surprise was nothing compared to that of Klaus and Rebekah. Rebekah's eyes widened like a deer in the headlights.

Klaus narrowed his eyes and cocked his head at his sister. "Rebekah." He seemed to be waiting for her response before he said anything more than her name, so there was an awkward moment of silence.

Rebekah took a sharp breath. "Nik. I didn't realize you were in New York."

"I could say the same about you. I came for Kol. Perhaps you know where I might find him?" he asked with a not so hidden threat in his voice.

Percy looked quickly between the two. "Wait! How do you two know each other?"

Klaus smiled his crooked smile. "Rebekah is my little sister."

It slowly dawned on all the teens in the room, save for Annabeth who had already figured it out, that Klaus was the person who was on the phone that day, and the demigods realized that this was the brother that both Kol and Rebekah were afraid of because of "boxes."

Rebekah was trying to get a read on Klaus's mood as everyone went through the customary introductions, but her brother was making it very hard. He was all smiles and there was not even a hint of his usual hidden hostility, yet he was slightly hostile toward her earlier.

To say Percy felt awkward would be an understatement. Klaus had always seemed so nice, but when he saw Rebekah, it was like he became a new person. He was hostile, cold and threatening. Rebekah seemed very uneasy as if she was waiting for Klaus to snap and lash out.

"I hate to be rude, but Rebekah never answered my question about Kol," Klaus said with a unassuming smile on his face.

"He's living with her. He has been for the last week or two," Chloe answered for her. She was unaware of what she was doing to both Rebekah and Kol by saying this, and her heart was in the right place. Klaus had been very friendly and she had decided that Rebekah had been exaggerating when she complained about him.

Klaus's face darkened. "And you didn't tell me?" Rebekah gulped. She knew that tone of voice. That was his paranoia, "you have betrayed me" tone of voice. She needed to be very careful of her next move because she was basically minutes away from getting daggered.

They all stood in awkward silence for a few moments until Klaus gestured to the hallway of the apartment and said, "Does anyone mind if Rebekah and I just go into the hall for a minute for a little family chat?" There was a chorus of "sure"s and "of course"s in response. Rebekah sighed and followed Klaus down the hall.

As soon as they were out of earshot, Klaus's face contorted in fury. "Why didn't you tell me Kol was in New York? I told you that I was looking for him!"

Rebekah flinched at Klaus's volume. She really did not want anyone to overhear this conversation. "He ensured that I couldn't tell you. He threatened me if I didn't help him."

"What could he possibly have over you? A dagger perhaps?"

"He threatened me with witches, you and other things. He even started hanging out with/dating one of my friends to get to me. I don't think he even has the dagger."

"Well, our brother is quite the menace to society." There was sarcasm dripping from Klaus's tone. He found it hard to believe that Rebekah really was scared by these threats. "Besides, what makes you think that he doesn't have it?"

"I checked multiple times. Plus, he mentioned the dagger, but didn't use it on me or even threaten to. If he really wanted protection he would have used it."

"That's because he doesn't have any of the white ash."

"What?!"

"Only one dagger was missing; all of the ash and other daggers were still there."

"Then why do you think it was Kol that took it? What use would he have for a dagger without any of the ash? Creative interior decoration?"

"To protect himself. He had done it before."

"Then why would he take just one dagger? All the other times he has taken all of them. He knows you can just use the others on him."

"I don't know! He was seen near my house on the day it went missing! I don't know about you, but that makes his guilt pretty clear to me. He even knew I wasn't going to be home when it went missing then he runs off as soon as the dagger goes missing."

"It just doesn't make sense. Why come to me for help if he knew that I could possibly rat him out. He needed more than just my house; he must have needed my help to find out who really took the dagger."

"Or he wanted to frame you and convince me that you had the dagger while he escaped free and clear."

"Either way, something is off. We need to find out what is going on with this dagger. Care to join your favorite little sister for a little sleuthing?"

"Ok, fine, but if you or Kol try to pull anything, I will put you in a box for longer than you have ever been. But we are being rude, let us rejoin the party."

Rebekah narrowed her eyes at Klaus's threat, but followed him back into the main room where the others had been chatting quietly in a halfhearted attempt to maintain the siblings' privacy.

"Sorry about that. Kol's a bit of a troublemaker," Klaus explained.

"That's totally understandable," replied Sally. She looked pointedly at Percy in a joking manner when she said this as if implying that he was a troublemaker.

It took Percy a moment to understand what his mother was saying, but once he did, an offended "Hey!" was his only retort.

"We should go get to work on that project," prompted Annabeth. Thalia and Nico sighed, but they got up and headed to Percy's room with everyone else.

"I had better be going," Klaus announced. "Thank you for the coffee, Sally." He shot one final warning look at Rebekah before leaving.

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That night after Chloe, Jules, Max, Tucker and Rebekah had left everyone of the demigods turned to Thalia.

Thalia looked at her friends expectant faces, "What?"

"Well, what did you hear? What did they say?" Will asked. "They both looked pretty irritated." He like all of the others was eager to know more about the strange siblings that were putting them all on edge.

Thalia sighed. "They were talking about Kol and that dagger again."

Annabeth leaned in more to her friend. "What did they say about it?"

"They said there was more than one dagger and something about white ash, whatever that is, being necessary to use it."

Annabeth's brain was moving even faster than usual as she tried to figure out an explanation for all of this. "Did they say anything more?"

"Yes. Rebekah thinks someone framed Kol, but Klaus is pretty sure he was the one that stole the dagger. Klaus said something about Kol taking the dagger for protection from him. Rebekah and Klaus are going to investigate the dagger together."

Annabeth still was not satisfied. "Are you sure that is all they said?" She was trying to make sense of this information, but could not. She hoped that there was just some information missing that Thalia had overheard, but had not yet told them.

"Kol was threatening Rebekah to keep her from telling Klaus. She said he threatened her with witches, Klaus and was even hanging out with one of her friends to make a point. I don't know what friend it was though. Klaus threatened Rebekah with a box if she or Kol crossed him while they were looking into the dagger."

"Chloe," Nico said suddenly.

Will gave his boyfriend a confused look. "What? Why are you talking about Chloe?"

"I saw Chloe texting Kol and talking to him one day," Nico explained.

"Kol is using Chloe as a pawn?!" Percy asked in a dangerous tone that was as stormy as the seas he was descended from. Chloe had been a good friend of his before he had disappeared and he didn't like the idea of someone using her emotions for their own gain. Hanging out with Kol also sounded unsafe from what he heard from Thalia.

Annabeth rubbed circles on his back to calm him down before continuing to think out loud. "What I don't get is how he even uses the daggers. Does he stab them? That wouldn't explain the ash, but what other horribly scary things can you do to someone with a dagger? Cut their hair in their sleep?"

Thalia looked thoughtful. "Maybe they're in some kind of cult that uses the daggers for a ritual that includes the white ash." Everyone including Thalia laughed at this proposition. The idea that someone as independent and self assured as Rebekah would be victim to a dagger worshiping cult was pretty ridiculous. After all, cults prey on the self conscious and shy, not people like the tall british blonde.

"Is it possible they're monsters or magicians like Carter and Sadie?" Percy suggested.

Annabeth shook her head. "They're not monsters, but you're right right maybe they are magicians. That would explain the whole dagger thing."

"No, I've run into magicians before on the hunt. They feel different than the Mikaelsons. Magicians usually leave a little magical signature behind kind of like how people leave skin cells. The group of magicians we met told us how to track it. I would have known if the Mikaelsons were magicians," Thalia explained. "All I know is that they do not feel human."

Annabeth cocked her head as if trying to remember something. "I think you're right Thalia. I get a weird feeling that isn't quite human off of him, but it is different than the way that Sadie and the demons felt."

"If they aren't humans, then what are they?" Nico demanded.

Will raised his hands in a "slow down" gesture. "Wait, back up. They may be human. We shouldn't be paranoid or jump to conclusions. They could just be a crazy family."

"I don't know. Demigods should always follow their instincts. Instincts can save lives and stop wars before they start," argued Percy. Just then Sally called out that it was time for dinner. The demigods filled into the diner room and began to enjoy the fruits of Sally and Paul's combined labor.

I know I am a horrible person that doesn't update, but this time I swear I have an excuse. I have been taking MCAS 2.0, a state standardized test that totally sucks, so I a was all out of energy to write. I always take the longest in my grade because I take forever to answer to essay questions, so it is really hard to get home and write a chapter after answering stupid prompts all day. I tried to make this a longer and more exciting chapter than usual because I took so long to update. Thank you to Ronlol2 and OphiuchusIXII for reviewing. As always constructive criticism is loved and appreciated, so please review.