"You put a mysterious blue box slap-bang in the middle of town, what do they do? Walk past it."

-Is what the Tenth Doctor said. Really, the he should have known better. It was only a matter of time before they found someone who doesn't just walk by…

Okay. There was a big blue 1963 London Police Box sitting in the middle of town. He could deal with that. The only problem was that this was Japan of the 21st century and that thing had most certainly not been there the day before.

Something was definitely strange about that.

He had tried asking around. Most people glanced at it and exclaimed, 'Oh, I hadn't noticed that before!" then continued walking. The detective grimaced. Was he the only one who thought this thing in the middle of Beika City was unusual? Really? He feared for the human race.

So of course, the tiny detective took it upon himself to explore the mysterious Police Box. No one paid the bespectacled boy any mind as he scurried in circles, searching for anything that might clue him in to its purpose here. Nothing. He glanced at the door to the box, then gripped its handle and pulled. The doors swung open, and he stepped inside.

Before he could even look around, they slammed shut again. Conan spun around to gape at the now-closed doors. He tried to push them open, to no avail. They had locked. God dammit, this was just what he needed. Maybe the telephone would still be in use… No, that was just stupid. With a groan, he turned around—

Oh. My. God.

"It's bigger on the inside," he murmured faintly. He walked forward, gripping the rails of the machine. A huge mess of levers and buttons and flashing lights rose up from the floor. He swallowed, walking down the steps and around the device, never taking his eyes off of it. "How… How the hell is this possible?"

Then he bolted. He ran up the stairs and to the doors, beating small fists against the wood, rattling them, even turning on his shoes and trying to kick it open. The machine didn't budge. He was trapped.

"Okay," he said to himself, finding comfort in hearing something other than the beeping of machinery. "Okay, Kudo, calm down. You need to find another way out of here." He glanced at the controls. None of the buttons were labeled. There was no instruction manual on How to Operate a Physics-Defying Police Box.

What he did find was a hallway, which in turn branched off into a hundred other hallways. So, likeliness was he was going to get lost in here and end up starving to death. Maybe Hattori would see this thing the next time he came to Tokyo and find his rotting corpse.

This was too much. Conan slid down the wall, hugging his knees to his chest. He closed his eyes and just breathed.

According to his watch, only twenty minutes passed before the doors to the Police Box opened again. A laughing voice said, "And what is this?"

"Octopus. A bit rubbery, but delicious nonetheless."

The laughter only grew louder. "This… definitely beats chips. And I think I'm hooked on the ramen here. I'm telling you, Doctor, if I get fat you're going to pay."

"I'll take my chances. I myself am partial to the Takoyaki in Osaka. You can get it in Tokyo, of course, but nothing beats Osakan Takoyaki. Well, except those candies from… ah, where was it again? Began with an 'A'… Never mind. Eat quickly, Rose! We're off!"

Then suddenly there was a loud, grinding noise. Lights flickered dimly from the console room. The man was shouting, "Hold that lever, Rose! No, not that one, the one—yes! Hold on!"

There was more laughter from the girl. Then suddenly the ground lurched beneath him. Conan yelped as he tumbled, skidding into the room and hitting his head against the rail.

"Doctor, did you hear that?" He heard footsteps, and suddenly someone loomed in his blurry vision. A blob of gold hovered over him. "It's a kid!"

"How did he get in?"

"Hey, kid. Are you alright?"

He blinked until his vision cleared. The blob turned into a face framed by blond hair. A young woman looked down at him with concern. He jumped up suddenly, making her step back, and glanced around wildly. A man off to the side was gazing suspiciously at him. Neither of them seemed to be a threat, though, and the girl had even expressed concern. Not relaxing, he asked, "Who are you?"

"I'm Rose," she replied, kneeling down to eye level. "What's your name."

He hesitated. "Edogawa Conan," he finally told her. "And who's that?"

The man seemed to recover, suddenly brightening and striding towards him in long steps. "I'm the Doctor," he announced, and suddenly seized his hand to shake it. "Nice to meet you, Edogawa Conan! Or is it Conan Edogawa? Last name first in Japan, right?" Without waiting for a reply, he released Conan's hand and began to pace.

"Now, Conan Edogawa, I can't help but wonder how you came across my TARDIS, and how you got inside."

Conan scowled at the man. "What the hell is a TARDIS?"

"The Police Box," Rose said helpfully.

He gave a nod of thanks to her before closing his eyes and leaning back. "I saw a 1963 London Police Box in the middle of Tokyo. That's a bit odd, if you know what I mean." Rose stifled a giggle. "And getting inside wasn't that hard. I just pulled the doors open and they locked behind me."

The Doctor furrowed his brow. "You found it odd?" He asked. Conan nodded. "And then you investigated?"

"It wasn't there yesterday," he deadpanned.

"Brilliant!" He suddenly exclaimed. "You, Conan Edogawa, are the first human to investigate my TARDIS. (1)"

"There goes my faith in humanity," he sighed. "Now can you let me out?"

Suddenly he didn't like the look in the Doctor's eye. "What did you do?" He asked. Without waiting for him to answer, the boy ran for the doors. This time they gave when he pushed them open. And his jaw just about dropped.

"Right. This is one of the many jungles of India. About… oh, I'd say three centuries before your time." He turned to the Doctor who was now wearing a broad smile. "Welcome to the TARDIS. That is Time and Relative Dimension in Space." He walked outside, followed by Rose and a stunned Conan, and patted the Police Box proudly. "She can travel anywhere. Any time, any place on any planet within this universe."

The detective blinked, took off his glasses and rubbed his eyes. The jungle was still there. "How is this possible?" He rasped. "How is any of this possible!"

"Don't ask," Rose grumbled. "He tried explaining it once and I had a headache for days after."

"So," the Doctor said breezily, walking towards Conan with his hands behind his back. "How would you like to travel through space and time, Edogawa? Anywhere you want, I can take you."

"Hang on," Rose cut in. "He's just a kid. You're, what, six? Seven?"

"But he's more than a kid, Rose! He didn't just walk past the mysterious blue box—he questioned it! He went to investigate! He's supposed to be here—the TARDIS herself let him in." He gripped the girl by the shoulders, shaking her lightly. Then he released her and leaped back, spreading his arms. "Conan Edogawa, Rose Tyler and yours truly traveling through the universe in the TARDIS. Fantastic!"

Conan blinked. He shook his head, utterly lost, and suddenly began to laugh. It was loud and slightly hysterical, and he knew it. "This is insane." He leaned against the TARDIS, covering his eyes with an arm. Then, after taking a deep breath, he looked at the Doctor. "Will I be able to meet Arthur Conan Doyle?"

"Of course!" He grinned. "Author of Sherlock Holmes. Does that mean you're in?"

Conan opened his mouth. Before he could get a word out, the very earth shook beneath their feet. All three toppled to the ground with varying noises. Conan ended up on his back. "…The sky is red," he commented after a moment.

"Huh. That it is." The Doctor stood up, helped Rose to her feet, and began to dust himself off. "Well, that's ominous."

And then he took off running. Rose laughed. "Welcome to the club!" She called, then began to give chase.

Not sure if this is true. I've only watched seasons 1 and 2, and have started 3, of the latest Doctor Who series.

So welcome to Sanity is Relative, otherwise known to me as Detective Who! Not exactly my most creative title. This will be a series of connected oneshots taking place in an undetermined timeline where Rose is still around and traveling with our lovely Tenth Doctor. You can consider this as an AU or simply before the season 2 finale, whatever floats your boat.

By the way, this is my first time writing for DW. Please feel free to give me advice on the personalities of Rose and the Doctor, and point out any OOCness that may crop up.

As a side note, I was watching DW today. Halfway through a chase scene with some weird... thing... I realized I was just sitting there eating an apple strudel and burst out laughing.