Sorry guys for not updating in a long time. I had a lot of things to do this week. I'm not sure if this chapter is going to turn out good or not. Any reviews or comments will be most appreciated. Thank you!

They finally arrived at the apartment of Tyron White.

"Stay behind me Castle," Beckett said.

The building was tall, but old and beat down. The stairs creaked beneath their weight almost as if the stairs would just break at any given moment. The hallways were hot and narrow only allowing one person to walk across at a time. When they got to the front door, Ryan carefully placed his ear next to the door trying to hear if there was anyone inside. He made sure it was quiet inside before he signaled to Beckett to open it. She took a step back and placed the gun in front of her. She pushed the door opened with her left leg not giving it a lot of strength. The impact of her high heels against the wooden door made a dent and the door finally gave way, letting the gust of wind from the hallway inside. Immediately they could smell the smell of old dinner and lunch from days ago. It was clear that no one been in the apartment for at least a couple of days. Beckett lowered her gun while feeling a little bit of OCD kicking in. Castle covered his nose trying to block out the vile smell. He refused to breathe in until he ran out into the hallway. Beckett could hear him wheezing outside, but she herself couldn't help but to avoid breathing in too deep.

"Check out all the rooms and see if you can find something important," Beckett said looking at Espo and Ryan. She half-ran and half- walked to a window to crack it open.

Ryan and Espo nodded and walked into separate rooms with their fingers still to their noses. Beckett rummaged through the piles and piles of paper hoping to find something useful to the case, but came up short. Everything was either about buying hookers or takeout food. She groaned and threw the yellowed paper back at the table. Espo and Ryan came out with nothing in their hands.

"We found nothing in the bedroom except for wads of rolled up cash which is pretty common for a drug dealer," Espo said.

"Alright. Let's call the rest of the squad for a full scan of this apartment. We might have missed something," Beckett said pulling out her phone and hitting speed dial for the precinct.

They meet Castle near the stairs. "Find anything?"

"Nope," Ryan said.

Castle nodded. "Thank god I wasn't in there. You guys look sick."

Back at the precinct, Beckett and Ryan were searching through traffic cams and nearby store cameras to see where Tyrone might have gone if he wasn't home for 4 days.

Beckett's phone rang and Lanie's face popped up at the screen. "Hi Lanie. Got anything?"

"Yeah. Come down to the morgue with Castle or whatever. You'll find this interesting," Lanie said.

"What did you find?" Beckett said looking at the mass amount of petri dishes.

"Tyrone White died at around 7-8 in the night. Also, you'll be happy to find out that I may have found our killer. I manage to pull out some skin underneath the nails and it wasn't Tyrone's. Also, while I was emptying out his stomach contents, I found pieces of chewed up paper."

"Well that's new. Our guy enjoys eating paper in his free time," Castle said laughing at his own joke.

"No. I mean the paper was not important, but what was on the paper was. The piece of paper was coated with a substance. I ran it under some tests and it turns out it was arsenic. Arsenic is very lethal in high doses. It seems the paper was in his body for over a day. Also he has been eating paper covered in this same poison consistently over time. " Lanie said.

"I read a book once that said that if you ingest the same poison, you body gets use to it and then it no longer has the same poisonous effect on you. Maybe that was what he was doing," Castle said. He raised his hand above his head and shrugged.

Lanie paused. "That could be true. Impressive Castle. Well it's up to you guys to find out why."

As soon as they got back, Espo and Ryan were already waiting for them.

"I found out where he last when. He was caught in a traffic cam walking with a man a couple days ago. They were having an argument and things got heated. We have already identified the man in the video. His name is Andre Rivers. We've got people bringing him in right now," Ryan said.

"Do you know what they were fighting about? " Beckett said.

"No the cars passing by them were too loud."

"I'll interrogate Mr. Rivers. Castle you watch," Beckett said.

She stepped into the room closing the door behind her. She placed the opened folder in front of Andre Rivers with the picture of Tyrone White on top. "Do you recognize who this man is?"

Andre leaned forward and shrugged. "I don't know. I don't even know why I'm here. I didn't do nothing wrong. "

"Are you aware that this man died last night?" Beckett said. She flipped to the painful picture of Tyrone with a gunshot wound to the head and showed it to Andre.

Andre shrugged again. "Like I said before, I don't know this man. I got nothing to do with him."

"Then would you care to explain why you were arguing with him? We caught you fighting with him two days ago on a video. You lied, you knew him. Did you kill him Mr. Rivers?" Beckett said looking at him with cold eyes.

Andre sighed. "I didn't kill him alright. Yeah we threw a few punches at each other, but I didn't even know him that well."

"Why were you two fighting?"

"He owed me money and he couldn't pay it back. So we fought. Pretty simple."

Beckett leaned forward attempting to intimidate him. "So you got angry at him. You followed him last night and when you got the chance you had your men beat him up and then you shot him in the head."

Andre smiled and leaned forward towards Beckett. "Look pretty girl. I didn't do nothing. I don't have to say anything either." He then slumped back into his chair, looked at the mirror and waved.

Beckett stepped out of the room rubbing her forehead with her hands. Inside she kind of hoped he was the killer so she could wipe that smile off his face.

"As much as I hate to say this, Andre Rivers didn't kill Tyrone. He was at the strip club last night the time the murder took place. He has plenty of witnesses that say he didn't leave until around 12 in the morning. He couldn't have killed Tyrone," Espo said.

Beckett nodded and turned around to face the murder board. She crossed out Andre's name. "Back at square one." Beckett's phone rang. She picked it up and hit Answer.

"Hello?"

A deep voice spoke, "Hello Beckett. I'll come around your apartment tonight. No surprises."

The person on the other end ended the call. Even though there was no caller I.D., Beckett already knew who he was-TaShawn.

"Who was it?" Castle said looking at the her phone.

"Nobody," Beckett said smiling at him. She slipped her phone in her coat pocket. "Let's call it a night guys. We'll pick up the case tomorrow."