A/N: Well I assumed it was implied that it was night. I did state that they entered onto a dark and unlit street. Besides, does it really matter?

And as for the rest, you'll find out eventually

"These dead ends are really pissing me off."

"You're not the only one."

"Same here."

"Is that a new lamp?"

Kate raised her eyebrows at Castle, who was staring intently at the lamp on her desk. She bit her lip to keep from smiling. I'm in love with a child, she thought to herself as she turned back to the murder board. Castle looked up when he noticed everyone was staring at him.

"I just… it's nice." He shut his mouth, ignoring the look Esposito was giving him and Kate's small eyebrow raise.

"What we need is to find the second witness," Kate started, ignoring Rick and looking back at the murder board. She stepped forwards and gave the sketch of the girl a light tap. "She's the key. She was following the two girls; she probably knows why the man was hunting Amber."

"What if she was just a bystander?" Esposito suggested. Kate shook her head.

"It's not just a coincidence. Those phone calls tell us that much. She was probably warning Amber to be careful and followed her to make sure."

"Unless she was the guy's partner and she was going behind his back to help Amber but she was just too late," Castle threw in.

Kate nodded. "That'd be even better. We need to find her."

"But we have no idea who she is," Ryan said with a frown. "She's a ghost, just like him. She could be in another state by now for all we know."

Kate sighed and pulled herself back up on the desk, furring her eyebrows in thought. She had to have some sort of connection to Amber.

"Maybe they have a past together," Castle said, as though he was reading Kate's thoughts.

"But there's no way of finding out," said Esposito. The four were fresh out of ideas; they'd tried everything and just ran into a dead end every time.

"Esposito, Ryan, take the sketch and ask around the school Amber attended. Maybe the second witness'd been hanging around the school to keep an eye on Amber."

Grateful for something to do, the boys nodded and walked off. With the boys gone, Castle moved next to Kate, feeling her take his hand as they looked back over the murder board. Something fishy was going on, Castle could almost sense it.

"Excuse me, have you ever seen this girl?" Esposito asked, holding the sketch out to a girl on campus. She scoffed and walked away.

"I think she liked you," Ryan teased. Esposito rolled his eyes.

"We've been here for an hour and we've got nothing," Javier said. "No one has an idea who she is. She's a ghost."

"Excuse me, have you seen this girl?" He tried again. This time, the young blonde froze.

"Yeah. Yeah, I have."

Esposito stopped in his tracks, turning to the girl. Ryan stopped alongside him, pulling out a pad and pen to write down the information he was about to get. "You have?" Esposito responded.

"Yeah. She's homeless. I've seen her a few times outside my mom's store. I think she was the one who broke in a few times."

Ryan scribbled that down while Esposito lowered his hand. "What do you know about her?"

"I know she used to live not far from here. I've heard her on the phone once. Somehow she managed to afford a cell phone, I guess. Unless she stole it." The girl tucked her hair behind her hair and crossed her arms around her chest, obviously a little uncomfortable talking about someone else to the cops. But she pressed on, knowing by Esposito and Ryan's expressions that it was important that she told them everything. "She talked about some building that she once lived in a couple hours from the city."

"Can you tell me where this building is, exactly?"

Grinning, Esposito nearly ran into the 12th Prescient, Ryan following closely behind. "Yo, Beckett!" He called, jogging towards the partners, who immediately removed their hands from each other's.

"We got a hit on the second victim's previous home. We're guessing she had family there or neighbors or something," he said with a successful nod.

"Awesome," Beckett said, grabbing the paper and standing up. "We'll go see if we can get anything. You guys try and figure out if there's anything we missed."

Excited that they had a new lead, Castle followed happily.

A/N: Slightly short… I apologize. And I'm sorry that I keep updating every hour on the hour… I understand it must be annoying if you have this story on alerts. I'm just on a bit of a roll right now.