Okay! Got the next chapter! Yay!

Crystallea: I know! I know! It's a Nemisis Plot! (sorry CoH joke). But really, my chapter are designed to make you want to read more. Keep you hooked. ;P And no, I'm not bringing in Romana. I'm still watching the Classics and haven't gotten to her yet, so I don't think I could pull off her character yet. As for Martha, I think I may have confused you. Martha will not be in my fic, however there is Martha Rodgers, Castle's mother. That was the MArtha I was referring to. xD And I'm glad you love my story. Sadly, the cliffhangers are to stay. xD

Missa: xD I know. I missed doing that. But being cut off from RPers did make me write this story, so plus side on that!

StoneStorm: That is a neat idea for a fic, thought not something I might write. xD I'm actually have another idea for a kind of sequel to this fic involving a different regeneration of the Doctor, Nine or Eleven (Maybe Twelve depending on when it gets written) taking place later in Castle and Kate's timeline. Dunno, I also have an idea for a NUMB3RS/DW xover. xD

superlc: I think you mean in Planet of the Dead. xD There were no psychics in Waters of Mars. ;P There is on thing I will say about Abbey: Spoilers! xD

Doctor Who Quote
Sarah Jane: You're being childish!
The Doctor: Well, of course I'm being childish! There's no point being grown-up if you can't be childish sometimes. - Robot

Castle Quote
Castle: Do you know what Lanie and Esposito were fighting about?
Kate: Everything. They both want to be together but neither of them wants to admit to it.
Castle: Ugh, why do people do that to themselves?
Kate: Maybe they just don't see it.
Castle: How could they not? It's so obvious. - Cuffed

I've paid my dues
Time after time.
I've done my sentence
But committed no crime.
And bad mistakes ‒
I've made a few.
I've had my share of sand kicked in my face
But I've come through.

(And I need just go on and on, and on, and on)

We are the champions, my friends,
And we'll keep on fighting 'til the end.
We are the champions.
We are the champions.
No time for losers
'Cause we are the champions of the world. - "We Are the Champions" by Queen

Chapter 10: No Mere Mortal

Kate pulled up to the sea of white and blue cars just outside the crime scene: a prestigious gym. The pink hue casting down from the day's dawn contrasted with the primary-colored lights of the police-marked vehicles. Kate pushed open the driver side door and stepped out, followed by the Doctor from the front passenger side. Castle stepped out from behind her and Jack from the Time Lord. As they walked from the car to the entrance of the building that held the gym, the quartet was greeted by Ryan and Esposito, who both seemed quite anxious to meet this Doctor character.

"Ryan, Espo… this is the Doctor and Captain Jack Harkness," Castle introduced the men before Kate could get a word in edgewise, "Doctor and Jack, meet Detectives Kevin Ryan and Javier Esposito."

"So this is the famous Doctor that the entire precinct has been up in a roar about," Ryan grinned excitedly, holding out his hand. The Doctor shook it. However, Esposito only raised a brow, trying not to look as interested as he actually was.

"A doctor of what, exactly?" the larger detective questioned, his arms crossed.

The Doctor ignored the question. He gave them a curt nod and pulled out his glasses, walking right past them into the building, leaving Jack to smile apologetically.

"A doctor of practically everything," the captain explained then turned to Detective Beckett.

"I'll make sure he gets a pair of gloves," She gave him a grateful nod before Jack scooted past Ryan and Esposito, "Oh, and nice to meet you both," he called back to the two and then continued to run off to catch up with the Doctor.

"Is this guy for real?" Esposito pointed his thumb back to the skinny man, who was reluctantly putting on the blue gloves Jack handed him. The two continued down the hallway as the Doctor flashed what he called his "psychic paper" to anyone who stopped them.

"Apparently so," Kate started to follow as she and the other two detectives discussed the details of the crime, Castle on their heels. She and her partner had already grabbed a pair of gloves themselves, going into their usual routine.

The four of them had to walk past the crowd of curious bystanders that had formed. These people were all attempting to look through the large window on the second floor of the main part of the gym to see if they could get a glimpse of what was happening.

Yet, Beckett ignored them. Instead, she lead her team into the building pushing through the crowded hallway of her fellow colleagues and into the elevator. Ryan pressed the fourth floor button.

"So what do you have for me?" Kate watched the dial above the steel doors move to the right as they started their ascent.

"The victim's name is Ashton Bradley," Ryan explained, "Same MO as the previous deaths. Lanie's preliminary says unexplained stroke, which is confirmed by witnesses. Bradley's trainer said that he had to stop the session short because our vic was starting to feel faint and overheated. The guy assumed heat-exhaustion, but then our vic just collapsed and started convulsing."

"And Lanie found the same metal device on the base of our victim's neck," Esposito continued as the elevator slowed down and the doors opened after a ding.

"So the first two murders and the one attempted had the victims found in the privacy of their own homes. These last two were in public," Kate commented, the first one to step out.

"Which means our psychopath is escalating," Esposito followed her through another busy corridor filled with cops and techs.

Kate frowned. She hadn't included Laura's murder/kidnapping as part of the same murder investigation as these mysterious ones. However, her gut instinct told her they were connected through the Doctor. And something that man said about Laura's case and about how she was a message to him – only the Doctor could have known these absurd findings. They were findings that she was now having difficulty remaining skeptical about.

There was also what Ryan had dug up – this Third Eye Company.

"Not necessarily. Ryan, you said that the other victims each had a connection with Third Eye?"

Ryan nodded, "Yeah, but the company is only a year old and clean. BBB-certified and everything."

"Third Eye? You mean that new agency health organization that promotes alternative medicine?" Castle inquired. "They are involved?" He sounded a little too excited, "I knew that place sound fishy!"

"Wait, you've heard of them?" Kate frowned.

"Yeah, my mother got a brochure from a seminar they hosted a few months back. Should I be worried?"

"Don't think so," Kate made a mental note to herself to get a hold of that brochure and turned back to Ryan, "Check with the friends and family. See if Bradley also had any involvement with this company or any seminars they hosted in this past year, including the past victims. And keep looking into that company. Financials, anything we can get our hands on."

"Got it," Ryan made a note and walked back to the elevator.

Kate stepped into the room and took in the scene. Lights flashed in random intervals as forensics captured every detail they could find. She heard the soft murmur of witnesses giving their testimonies to other detectives and cops. But across the room was her destination.

Ashton Bradley's body lied there on a mat in front of a mirrored wall. It was surrounded by three figures, each she recognized clearly. Kneeling down on one side, writing on a clipboard in her hand, was Doctor Lanie Parish. Across from her, the Doctor began to kneel down to the body, examining it, as Captain Harkness stood behind him.

Watching that strange skinny man for a moment, Kate started to get the feeling there was more about him than he let on. That his crazy theories about psychic energy and clones were not as much as science fiction as she thought they could be, and that the Doctor had firsthand experience in this unbelievably real fantasy.

Lanie looked up at the Doctor from her clipboard.

"Excuse me? Who are you and what are you doing?"

"We're with Detective Beckett," Jack explained as he walked around to greet Lanie with his hand extended out to her. She stood up to take it. "Captain Jack Harkness," He gave her his signature charming wink and smile.

"Jaaaack!" The Doctor chided without looking up from the body, "What have I said about a time and a place?"

The captain responded back to the Time Lord with a smile and a roll of his eyes, "The cranky one is the Doctor."

"Oh," Lanie smirked playfully back to the captain, "It's a pleasure to meet you both." Her tone suggested that she was more pleased to meet the captain.

It was the Doctor's turn to roll his eyes before turning over the body, studying the plate on the back of the victim's neck. He then pulled his sonic screwdriver out from his pocket and pointed it at the device. After a few seconds of blue light and a whirring sound emitting from the screwdriver, the metal device on the back of the victim's neck unlatched and fell into the Doctor's palm. He held it up to his eyes for a few seconds before sniffing the bloodied end that was attached. Then he brought the attachment to his lips and tapped it to his tongue, tasting it and gaining a look of disgust from the coroner.

"That is not sanitary," Lanie commented, making a face.

"He was under the same drugs."

"How did you-excuse me!" She reached out and took the device from the Doctor's hand as he tried to pocket it, "I'm not going to let you steal evidence from right under my nose, mister!"

"Doctor," he corrected as he reached out and took the device back. "Besides, I need this more than you."

"It belongs," she snatched it back, "with us for analysis."

The Doctor growled and grabbed the device again, "Fat good you lot did on keeping the last one."

"Doctor," Jack crossed his arms at the man.

"I'm sorry," The Time Lord frowned and cleared his throat, "That was rude. However, I do need this to help locate where the signal is coming from." He waved the device to and fro and then pocketed it before the annoying ME could take it away from him. Again.

The sound of someone clearing their throat from behind the Doctor dissipated the childish air, as the three of them looked back at Javier. He had seen the interaction between Lanie and "Captain America." He was not impressed. Glaring down at the captain, the ex-military detective knew he would have to keep his eye on this one. Lanie just gave the large detective a pointed glare, in which the two began to have one of their silent staring fights.

"Hey, Esposito, why don't you go help Ryan with Third Eye?" Kate called out to him, seeing the tension that was starting to form between Javier and Lanie.

"But-" the large detective protested, but shut his mouth tightly at the look on Kate's face and glanced back at the captain. He gave the man one of those 'I'm watching you' stares before turning back and locating his partner. But as he passed Kate, she stopped him for a moment.

"Also, see what you can dig up on this Doctor guy and his friend. Something doesn't add up and I want to know what," Kate whispered to him.

"No problem," Javier smirked and nodded before walking away from Kate. He had no problem looking for any dirt on this Captain Jack Harkness.

"What do you got?" Kate moved to stand next to the Doctor, her hand on her hips, while Castle walked around and knelt to the body.

"He was given the same medication as the others. Had the same device," He pulled it out from his pocket and tossed it up in the air. After catching it, he studied it for another moment before pocketing it again.

"I still want to know exactly how you knew that from tasting the guy's blood," Lanie crossed her arms expectantly.

"What?" Kate gave the Doctor a look of shock and disbelief.

"You tasted his blood?!" Castle made a strange sound with a face, "Dude, is that actually sanitary?" he asked Lanie.

The Doctor gave a pouted frown at the looks he was gaining from those around him. He pushed himself back up and straightened his tie, "That's not important."

"Nuh-uh! You don't get to act all weird and then brush me off like that!" Lanie pointed a finger at him, "You are going to explain to me how exactly you think you are some human ELISA?"

The Doctor nearly smiled at the annoying woman's sass. It gave him the bittersweet memory of a certain ginger. "You wouldn't believe me if I told you," he replied and received a glare from the ME for his condescending tone, but he ignored it and continued, "Now, what's really important is now I can find out where the signal that is killing these people is coming from."

"Are you saying you now have a way to track those responsible with that?" Kate gestured to the Doctor's coat pocket.

"Well, yeah," He gave her a 'duh' look. "But," his brows shot up as he accentuated the word and pointed his index finger up, "first I need to build a better psychic pulse tracker." He shoved his hands in his pockets before backing away a couple of steps.

"Where are you going?"

"Going back to the TAR- I mean my," the Doctor paused a moment, scratching behind his ear, "uh, lab." Kate raised her brow at the lie.

"Are you not even tired?" Castle finally stood up. Exhaustion was creeping up on him and he knew it had to be as well for the other two men, "Either of you?" He looked back and forth between Jack and the Doctor.

The Doctor stiffened at the writer's observation and glanced to his friend. He could see the captain was showing no effects of the lack of sleep from the night before and it made him wonder if being a fixed point changed the man's physiology. The Time Lord himself had no need for the same amount of sleep that humans needed, not that sleep came easily for him anyway. However, was it the same for Jack, who is, for all intents and purposes, still human?

"I'm fine! We both are!" the Doctor finally replied, Jack nodding in agreement, "Better than fine. Sleep is for mere mortals! Now, off to see about constructing a psychic energy transceiver." He started to leave, but stopped at Kate's inquiry, turning back.

"Fine… How long will that take you?"

"Just about... oh, a couple of hours? How about this, you lot, do whatever it is you do," the Doctor pointed at the body, "and I'll go do what it is I do," he pointed his thumb behind himself, "and we'll all meet up sometime later at someplace, okay? Good!" He starts to leave again.

"What time?"

Again the Doctor stopped and turned back around. His face was showing clear signs of annoyance.

"My dear, time is-" the Doctor swallowed his words after hearing Jack clear his throat, "Ah, right. What time is it?"

Kate looked at her watch, "Six forty-two. How about we meet at the Old Haunt at about four this evening? Gives you time to 'do what it is you do' and gives us 'mere mortals' time for rest from being up nearly twenty-four hours straight." She looked at the Doctor pointedly.

"Good idea. Allons-y!" He turned around, for the last time, and walked away, completely oblivious to the detective's tone about being "mere mortals" compared to the Doctor. She watched him leave with a shocked and affronted glare.

Jack moved up beside Kate, "This time I'm gonna keep an eye on him."

"Good idea. I barely know him, but I recognize it when someone is about to crack under pressure," Kate's face softened as she glanced briefly to the captain.

"Trust me when I tell you that is no possible feat. Some people make mistakes when emotional. Not the Doctor. He becomes focused. Dangerous even. Not for you or me… but for those who stand in his way."

"Something's different though, isn't it?" Kate turned her head to face the captain.

"You sense it, too?" Jack had met her gaze, in which the two held for a moment. In that moment, the two shared an understanding. They both cared for an erratically childish and brooding genius who had a pension for getting into trouble. After that moment passed, the captain nodded and followed the Doctor out of the gym, back into the streets of New York.

Sense what exactly, Kate didn't know. But her instincts were telling her two things: the Doctor may be dangerous, but he genuinely wished to help. He wanted to stop these murders. Stop the bastards from killing innocent people. She knew he would do whatever it took. It was like he needed to stop whatever suffering he had come upon. Like a man repenting for past sins.

However there was a nagging feeling. Something in the pit of her gut. Something kept telling her the Doctor was more involved than they realized. More than even the mad man may have realized.

*ELISA stands for enzyme-linked- immunosorbent assay. It's a popular format of a "wet-lab" type analytical biochemistry assay used to detect the presence of a substance. Not sure if that is what would be used for actual analysis on what drugs were in the victim's system, but this is one of the things I found that seemed to fit the most.

What is going on with the Doctor? It's all just from the events in Waters of Mars, or is something else?

Also reviews! Leave one please! Tell me your theories! And remember, need some ideas for things that would randomly be in the Doctors pockets, specifically anything to relate to his past regenerations! Thank you all for reading! I'm off to work on the next chapter for more Martha Rodgers and Alexis! Allons-y!