AN: This is a sequel to the story I co-wrote with DinerGuy. That story is called "Castles, Psychics… and a Body in the Fish Tank" You don't have to read that story to understand this one, but it would be a fun way to pass the time in between updates. (-:

.net/s/6399361/1/Castles_Psychics_and_a_Body_in_the_Fish_Tank

As always, we do not own Castle, Psych or the characters. We just like to theorize what it would be like if they all met.

Enjoy Reading!

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"It's the city that always sleeps, Gus!" Shawn proclaimed, throwing out his arms and motioning to the towering skyscrapers of New York City.

"The city that never sleeps," Gus corrected him, "and no, you have never heard it both ways."

Shawn shrugged, unperturbed by Gus interrupting him. "I'll learn it by the end of the week. I'm so glad Ricky invited us to come and visit him. It's the least he could do after writing his latest book about McNab." He took Gus' silence as a signal to continue. "So when are we supposed to meet up with Ricky?"

"I -" Gus started to answer and then stopped walking to stare in a window.

Shawn got three steps ahead of his friend before he realized Gus wasn't there. "What is it, buddy? Is the world's best cup of coffee located there? Oh man; that is a really ugly shirt." Shawn caught sight of the window display in the department store they had just passed.

"Shawn," Gus pointed to one of the mannequins in the back, "is that what I think it is?"

Shawn gave Gus a confused look and then glanced into the window. "It depends. Do you think that you're looking at a dead body dressed in the most hideous dress that has ever graced a giant window belonging to a store? Because if you do, then yes, that is what you think it is."

"That's not a dress; it's a brown coat. And if that's a dead body, shouldn't we be screaming and calling the cops?"

"Gus, please remember, we don't scream. We exclaim, and it'll be hard to explain to the cops. We don't speak the language here; this is New York."

"They speak English here, Shawn. Just call 911." Gus' voice was beginning to fade to a hoarse whisper as he continued to look at the body in the window.

"All right, fine, but if I get stuck talking to someone who doesn't understand me, and I accidentally insult their heritage and ethnic culture, I'm blaming you. Especially if they try to burn us at the stake." Shawn pulled his phone from his pocket and dialed 911.

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"Yo," Javier Esposito poked his head into the break room. "Dispatch just got a call about a body at 5th and Park."

Beckett nodded absently as she finished stirring the sugar into her coffee. "Alright, get Ryan and we'll head down there."

Within fifteen minutes, the three detectives pulled up in front of the store, where a crowd of onlookers had gathered in front of one of the large display windows. Two men were standing closest to the window. One had a rather nauseated look on his face and was turned away from the display. The other was holding one hand to his head and grasping a woman's palm with the other.

"I'm sensing that you will find your cat. She's just hiding in the closet next to your kitchen," he announced to the woman.

"Did you hear that, Jonathan?" the woman screeched into her cell phone. "She is? Oh, thank you, thank you!" She gave the man a hug and then hurried to hail a cab.

"NYPD," Beckett called out, breaking up the crowd and flashing her badge. "Who called in the body?"

"That would be us!" The man who had been hugged waved an arm up in the air like a second grader on the first day of school.

Beckett looked past him into the department store. There was indeed an odd mannequin propped up in the back of the window display. "You gentlemen can give your statements to Detectives Ryan and Esposito, I have a call to make." She waved for the two detectives as the access door to the window opened and Lanie Parish, the medical examiner, climbed in next to the body. Pulling out her cell phone, Beckett stepped away from the others and dialed Richard Castle's number.

"Alright." Ryan pulled out a notebook. "Names."

"My name is Shawn Spencer, and this is my partner Violet Beauregard."

Gus elbowed Shawn in the ribs. "That's the creepy girl from Charlie and the Chocolate Factory. My name is Burton Guster," he told Ryan.

Esposito smirked slightly.

Shawn mistook his amusement for recognition. "Ah, I see you've heard of me. I am a very famous psychic detective on the west coast. I solve cases for the Santa Barbara Police Department."

Esposito turned to Ryan. "I have no idea what he's talking about, although if he's from Santa Barbara, then he might know that rookie cop McNab, Richard Castle's newest muse."

Ryan's eyes lit up and he returned his partner's grin. "Yeah, he's the basis for the main character in Castle's newest best seller."

Shawn looked hurt. "See Gus, everyone knows Richard Castle, just like I told you."

"They know of him; they might not actually know him," Gus pointed out.

"Don't be a ridiculously overweight pet rabbit, Gus," Shawn started to argue with his best friend.

"Would you two just please explain how you found the body?" Esposito cut in before things got too tense.

"Ever since we solved the case of the dead wiseman at the Christmas village, Gus and I have had a knack for noticing dead bodies dressed up as fake people." Shawn got back on track after sticking his tongue out at Gus.

"We were walking by the store, and I noticed that the mannequin had fallen over. I had just been reading how department stores in New York pride themselves in their window displays, so it seemed out of place," Gus elaborated.

Esposito nodded and jotted down some notes. He opened his mouth to ask the next question when all of a sudden Shawn went boneless and fell to the pavement.

"Oh Gus! It's happening!" Shawn cried out from the ground. "I'm being taken over by the spirit of the mannequin; it's like a horrible sci-fi movie!"

Ryan and Esposito both took a full step back and watched as the psychic rolled around on the ground.

"Gus! It says that it was murdered!" Shawn sat bolt upright.

"A murder; now that is my style!" Richard Castle's voice joined their conversation.

Shawn jumped up from the ground and brushed himself off. "Ricky! How nice for you to visit our crime scene."

Castle gave them a grin. "How nice of you two to find a crime scene for me to visit. I didn't realize you two were in New York."

"Shawn didn't call you?" Gus asked, mortified.

"Me? You're the one with all the organizational methods and the planners," Shawn said defensively.

"You're the one the letter was addressed to," Gus rebutted. "You told me Rick said we could go to New York this week. And I took my vacation time and we got tickets."

"It was an open invitation, Gus." Shawn threw his arm around his friend's shoulder.

Any response Gus would have given Shawn was held in when Detective Beckett came over to them.

"How long does it take to get a statement?" she demanded, still carrying her coffee from the station.

"This must be Nikki Heat," Gus whispered to Shawn as he untangled himself from his friend's arm.

"Gus, Nikki Heat is a stripper name," Shawn replied at a normal volume, sounding slightly offended.

"I am not Nikki Heat, and nothing in the book actually happened," Beckett automatically told him.

Castle shook his head. "Not even close."

"That's not completely unexpected," Shawn groused.

"You've never even read the book," Gus protested.

"Gus, they make audio books. What else would I do at the gym?" Shawn laughed and shook his head. He turned back to Beckett. "I'm Shawn Spencer, by the way; you may have heard of me. I'm a famous detective."

"Psychic detective," Castle informed her.

"Right," Beckett nodded. "You work with Detective Lassiter. He called here when Castle went to California."

"Lassie called here?"

"We told him Castle was scared of sporks," Esposito laughed.

"You did what?" Castle looked between Esposito and Ryan, who were both grinning at the memory.

"And then Beckett told him that you blew up the break room with the espresso machine," Ryan defended himself and his partner. "That's worse then being scared of sporks."

Beckett brought everyone's attention back to the case, ignoring the mischievous grin on Castle's face. "Lanie puts the TOD twelve to fifteen hours ago, which means the murder occurred anywhere between midnight and 3am this morning."

"Which would make sense; someone would notice if a body were being set up in a window in broad daylight," Ryan observed.

"They'd also notice the smell," Castle added with a smirk.

Esposito cleared his throat. "Do we have an ID on the body?" he asked.

"Chance Jennings," Lanie chimed in, coming over to the group. "The store manager IDed him. Says he works the night shift stocking shelves and cleaning up."

"Hello," Gus greeted in the smoothest voice he could manage. He held out a hand. "Burton Guster."

"Lanie Parish." Lanie gave Gus a smile as she shook his hand.

"Anything else?" Esposito asked, walking through the middle of the group towards the building, forcing everyone else to move as well.

Gus had to scoot closer to Shawn to make room for Esposito between himself and Lanie. He glanced around in what he hoped was a casual manner, trying to ignore the glare the Hispanic detective was giving him.

"Cause of death is unknown, but I'm going to guess that this has something to do with it." The body had been loaded on a gurney, and Lanie pulled back the flap of the body bag to show a mangled mess of hair and blood at the back of the head. "I won't know more until I do a full autopsy."

"Thanks, Lanie," Beckett acknowledged.

The medical examiner nodded then climbed into the back of the morgue van.

"It's alright; you don't even have to ask me," Shawn spoke up.

"Ask you what?" Beckett looked confused.

"Ask me to help on the case. I already decided that I should. It's only fair to help Ricky out since he helped us out in Santa Barbara."

Beckett raised an eyebrow. "Help us?"

"It's going to be a tough case, I can sense it." Shawn nodded excitedly.

"Mr. Spencer -"

"Please, call me Shawn." Shawn gave her a charming smile.

"Shawn, we will alert you if for some reason this turns out to be the one case that stumps us," Beckett assured him, albeit a little sarcastically.

"In the meantime, why don't I take you to see some of the city?" Castle suggested, recognizing Beckett's 'I'm going to shoot you soon' tone.

"Ooh! Can we go see the Anarchist Bookstore?"

"Do you even know what an Anarchist is?" Gus shook his head. "The museum of history. That is where we are going."

"Oh! Like in that movie, with the monkey?" Shawn's eyes lit up.

"Yes, exactly like that."

"Alright, we'll have to be out by dark though. We don't want to be there when everything wakes up."

"You know that's right." Gus gave Shawn a fist bump.

"Right," Ryan shared a look with Esposito. "You guys go do that, and we'll go help Beckett solve the case."