"You two know each other?" There was hesitation in Simon's voice, as if he was as scared of his girlfriend as Percy was of Annabeth at the moment.

The dark haired girl turned to Simon. "Demigod." She spat the word out as if it was the greatest curse word known to man.

"Demigod?" Simon seemed to process the words for a moment. "Like Greek myth demigod? People who are half man half god?"

"They're not real." The dark haired girl said. She sounded thoroughly convinced that they weren't real.

"Gods, you're one to talk Isabelle." Annabeth said. "Or should I have said 'by the Angel'?"

By the Angel? What was Annabeth talking about? Percy opened his mouth to ask but Isabelle interupted. "Let's go Simon." She said and dragged Simon out of the diner, quite literally, by the back of his shirt. Simon shot Percy a "what did I do" glance before he was dragged out the door. Annabeth watched them leave. It wasn't until they were out of sight that she slumped in her chair. Percy eyed his girlfriend very carefully before speaking. It had been a long time since he'd seem Annabeth this upset and didn't want to upset her more.

"Who was that?" He asked cautiously.

Annabeth smiled. It was a fake smile. "Oh. Just a girl from my school." She said.

"You don't go to school." Percy said.

"My old school." Annabeth said. Her tone of voice made it very clear that she didn't want to talk about it.

"Okay." Percy said. "Fry?" He held up a blue fry as a sort of peace offering. Annabeth took it.

"How's school?" She asked.

"Fine." Said Percy. He went on to tell her how his school life was, all the while a million questions running through his mind.

"She called her a what?" Simon heard Clary's voice on the other side of the phone sounding a little bit surprised.

"A demigod." Simon repeated. "You know like half man half god?"

"A Greek myth? That's not possible."

"I don't know." Simon sighed. "I'm a vampire. Three months ago I would of said that was impossible."

"Yeah, but this is different."

"How?"

"I don't know. It just is."

"Ask Jace." Simon said.

"Ask me what?" Jace's voice rang through the phone. Simon sighed. Great. Clary had him on speaker.

"Ask you if demigods actually exist." Simon said.

Jace laughed on the other end. "Demigods? Don't you think that the Clave would know if there were little half god kids running around killing monsters?"

"You're right." Simon said as he took his laptop out of his backpack. "It's probably just one of Izzy's ideas."

"Probably." Said Clary. Simon heard Jace say something he couldn't make out on the other end and Clary laughed.

"Alright. See you guys."

"See you Simon." Clary said and hung up. Simon put his phone down on his bed and opened his laptop. He typed 'Percy Jackson demigod' in to the Google search bar.

"You're looking for a book in what?" The librarian eyed Percy over suspiciously. It seemed to him like she was seeing if he'd do any damage to any of her books. He laughed silently at the thought of a joke that Annabeth had made once about mortal librarians. You're a teenager. Don't you have a building to burn down?

"A book on people named Lightwood and the Angel." Percy repeated for the third time.

The librarian typed the words in to the search bar. "I'm afraid that we don't have anything of the sort." She said. "Though if you're looking for stories on Angels you might want to check the Religion section." She pointed Percy in to a series of bookshelves labeled Religion.

Percy scanned the religion section. Different types of religious texts and books on theology. Nothing on the Angel. Percy went back through the section again. Again, nothing. He tried once more and failed to find anything.

"Can I help you?" Percy turned around to see a girl in a gamer shirt behind him.

"Not unless you know anything about the Angel." Percy said.

The girl's nose twitched. "The Angel?"

"Yes."

The girl shook her head. "Never head of it." She said, but she hesitated. Percy could tell that she was lying.

"Are you sure? Have you ever heard of a girl named Isabelle Lightwood?" He asked the girl.

"No." The girl said all to quikly. She was lying again. "I've got to go." Before Percy could say anything the girl ran out of the library. She's fast, Percy thought to himself. He walked over to the librarian at the desk.

"What now?" She sighed.

"Can you tell me where the nearest bookstore is?" He asked.