I don't own Doctor Who, Harry Potter, or Sherlock Holmes. This is a slight crossover, but not enough to be listed as such.

4-12/OC.

Please enjoy! This is genuinely fun to write!

Chapter 2

I Rather Dislike Bugs.

"So, essentially, this is Noah's Ark," She muttered, "With people? And in space?"

It wasn't the weirdest thing she'd heard or even endured. She knew how weird people were and this really didn't surprise her that much. It was pretty normal for humans if she thought about it. She put her hands behind her back and moved around the main control room. It was a dull grey surrounded by dull grey. She took note of the low amount of oxygen in the air and turned to tell the others. She then remembered that they couldn't hear her, not to mention see her. She clicked her tongue in slight annoyance.

"Oh, you'll figure it out soon," She grumbled as she began to explore.

She got a warning from the Tardis to come back when called and she mentally agreed to that. She'd rather not be left behind. She was just atoms, and Huon particles, at this juncture. No one could see or hear her. She didn't have to worry about trouble.

She passed by a small circular window and look out of it. Her expression became amazed at the sight of stars sprinkling a black background. To her, it looked like rhinestones on a piece of dark velvet. It was…grandiose? She rather liked the sound of that. She stared out the window for a few minutes before gaining a small smile to her face. She knew of a professor who would have loved to see such a sight.

She stepped back from the window when she heard something behind her. It didn't sound like the shuffling of footsteps, but the sound of air moving through the vents. Even though she wasn't affected by the amount of oxygen in the air, for obvious reasons, she did find it easier to breathe. It had to be the idea of extra oxygen or a memory of being in an area of low air. She looked towards the metal vents and raised her brows.

The Doctor was good, just as he always had been. She grinned at that, it was a grin that wouldn't look out of place on a child in a candy store, before continuing her exploration. She was in the future, on a space…ship? She couldn't remember if the Ark was a ship or a station. She was pretty sure it was a station. Yes, it was a station. Definitely a station. If anyone had asked, no she did not stare at a nearby wall with a blank expression on her face until she figured that out.

She mentally gave herself a pat on the back for how clever she was. She stopped at that. Her journey into the time vortex had messed with her personality while expanding her mind. Something had been shifted in there. Her curiosity was filled to the brim and she felt like calling all of her peers daft apes. How strange.

She wasn't usually one for insults. Well, she wasn't the kind to give verbal insults that was more of her cousin's shtick. She gave a quiet sigh and tried to reign in her thoughts and get rid of the negativity. Even if she couldn't be seen or heard, she didn't need to make a spectacle of herself. She had done that plenty of times before without the help of a personality adjustment.

Seriously, the one time she hit the trick stair on the moving staircase and had to go to the hospital wing because she fell down three flights was enough to make her weary of being a spectacle. She could almost feel the phantom back pain from the memory. With a shudder, she straightened her suit jacket and stood up straighter.

She continued on her journey until she came back to the Tardis. She had gone a full circle! She chuckled at that. She was highly amused from that fact until she saw the Doctor and Sullivan taking cover behind a counter from a weapon that hung from the ceiling. It rotated in its socket and took aim at her. It actually fired at and she made a face at the feeling of something passing through her.

"That was awfully rude of you," She stated as she grabbed her wand and gave a quick flick of her wrist, "Perditio."

It burst into a small cloud of smoke and that caught the attention of the Doctor. He was slowly putting together a theory of his own. He started to wonder if he was just playing into silly paranoia. He was sure that the weapon had fired at some unknown point for some reason. It bursting from the inside like that was very suspicious and unlikely. It was one of the few marvels of human ingenuity and one that had gone through many tests to make sure such a thing wouldn't happen.

"That was a lucky break," Sullivan commented.

"Lucky my arse," She chuckled as she tucked the wand behind her ear again, "I'm like a witch on your shoulder, or the devil if you want to be technical about it."

She amused herself sometimes. She had to, she'd probably lose it if she couldn't find any humor in her situation. She would most likely end up caving in on herself if she allowed her mind to focus on what had happened. The way she was looking at it was either find some humor in the situation or be depressed. She found that she had spent enough time being depressed.

"Pity about the scarf," The Doctor muttered as the two men stood up, he was holding his incredibly long scarf in his hands one of the ends was smoking a little and he began to pat at it, "Madame Nostradamus made it for me, she was such a witty little knitter."

"The gratitude from you lot is astounding," She muttered as she pushed her hands into her pockets.

"All right, Sarah, you can come out now!" The Doctor called before returning his attention to his scarf, "Never get another one like it."

"My shoe," Harry muttered as he picked up his ruined shoe.

"Mind saving that? I can repair it with ease," She stated as she twirled her wand.

"Sarah?!" The Doctor called again.

The two moved from the room and she was about to follow before she saw something from the corner of her eye. It was small, green and completely slug-like. She moved towards it and waved a hand in front of its eyes. It didn't react to her and she knelt next to it to investigate it. It reminded her of a murtlap slug. Now there was a nasty creature, it had a potent poison in its slime that could kill a person within half an hour. A bezoar was the quickest remedy not to die from the poison, then again wearing dragonhide gloves also helped.

She was getting off track again. How odd, that kept happening. She didn't like it. She looked back to the slug. She really didn't like it. She rather disliked slugs and bugs at that. Nasty creatures ate most of her mandrake one year. Never really liked them after that, if one were to ask she definitely didn't take pleasure in using them for potion ingredients.

"Doctor, you might want to be careful!" She called, even though she knew it was a waste of time, "Zed, we've got a bug!"

She tried to remember what movie that was from. Wasn't it Men In Black? It was oddly fitting for the situation. She followed it to a large room filled with plastic. All the plastic was shaped into a humanoid form. It was the pods that held humans, she knew that much.

She walked up to one that had just been activated and stuck her head inside. It was actually quite fun to be made out of atoms. You could go through walls if you concentrated enough. She was welcomed to the sight of Sarah Jane-Smith. She rather liked the new clothes she was in, very fashionable. It looked like a mix between what the 1970s thought of Sci-Fi fashion and the late 1990s idea.

"This isn't a mortuary, Harry," She could heat the Doctor and she pulled her head away from the pod, "Quite the reverse."

"Reverse?" Sullivan question as they walked into the chamber, "I'd hardly call it a nursery."

"Cryogenic!" She exclaimed, "That had been on the top of my tongue for a while."

"What?" Sullivan questioned the Doctor, she had unfortunately talked over him.

"It's an old principle, but I've never seen it applied on this scale," The Doctor answered, "Look at them."

"There's well over a hundred on this station," She muttered as she leaned against the wall.

"Well, when you've seen one corpse you've seen them all," Sullivan stated in a bland tone.

"I like him," She told the Doctor, "You should keep this one, what a funny little man."

"These people aren't dead," The Doctor stated with the slightest hint of annoyance in his voice, "They're asleep. The entire human race awaiting the trumpet blast."

Sullivan opened a pod and stared at the person, he then took their pulse. He slowly turned towards the Doctor and gave the man a serious look. She started to cackle. She couldn't help herself it was pretty funny. His expression was perfect for the situation.

"Dead as a door knocker," Sullivan quipped as he released the person's wrist.

"Homo sapiens, what an inventive, invincible species," The Doctor stated as they moved closer to Sarah's pod, "It's only a few million years since they've crawled up out of the mud and learned to walk. Puny, defenseless bipeds."

"I think you just insulted a few billion people with that one," She dryly stated as she began to wonder if she could sit on air.

"They've survived flood, famine, and plague," He continued on without a care in the world, "They've survived cosmic wars and holocausts, and now here they are amongst the stars, waiting to begin a new life, ready to out-sit eternity. They're indomitable. Indomitable!"

"Are you done?" She asked with a dry smile.

She didn't mind, she rather liked listening to him. He had one of those soothing voices that you could listen to for hours. It was a baritone and she absolutely adored it. She raised her brows at that, no wonder he was her favorite. She could listen to him read the phonebook out loud and be entertained for hours.

"Sorry to contradict you, but there isn't even the faintest flicker of life in these people," Sullivan stated.

"It's suspended animation you dolt, of course, the minds been shut off for the most part," She stated, "They still have some neurological activity going on upstairs to stay alive."

She stared off into space for a few seconds following that. She had learned that during her glimpse into the time vortex. She had learned more than she thought. With a single glance, the secrets of time and space were hers to twist. Some of the information was still coming in droves, and other bits were slowly appearing. Slow enough that she knew she was going to be getting new information for years. She pulled her wand from behind her ear and flicked it towards Sarah's pod.

"I say, Doctor!" Sullivan called as the door opened and almost hit him in the face.

"Men, always so quaint," She stated in fond amusement, no resentment or anger were behind those words just good-natured ribbing.

"What have you found?" The Doctor questioned as he walked over, "Sarah! Oh, Sarah Jane."

"We can't help her now," Sullivan stated.

She narrowed her eyes as the Doctor agreed with him. True, she'd be like that for three thousand years, but did he forget the other people within the pods? Hundreds of them! There had to be one that was on the cusp of waking. She moved from her wall and towards the pods. She went through a cupboard when she jumped back in alarm, hitting the ground as she scrambled away from it.

"I bloody hate bugs!" She exclaimed as the cupboard door slammed opened from her magic responding to her alarm.

"Can space stations even have hauntings?" Sullivan asked.

"Oh, by the time I'm done with you, you'd wish I was a ghost," She growled as she jumped back onto her feet fixed her suit jacket as the bug she had seen fell out with a soft thud, "Now what kind of universe tempting bullshite is that?!"

"Well, it's dead, anyway," Sullivan stated.

"Very dead," The Doctor confirmed as they examined the bug corpse, "Almost mummified."

"Oh, that's reassuring," She commented, "I'm heading back to the Tardis, I really, really dislike bugs. Ta-ra gents."

She had done as she said she would. The Tardis welcomed her back in amusement and she made a face. She didn't like bugs! She wasn't going to stay around them if she didn't have to. She might've stayed if she could be seen and as such had a greater presence, but she couldn't so she swanned off.

It was relatively simple really.

"I'm going to explore in here," She announced, "Fewer bugs."

The Tardis gave a soft laugh at that and she threw a wink over her shoulder before heading into the bowels of the ship. What she found were rooms. Well, hundreds of rooms. So many rooms that she just ran through the compartments, seeing as a grand majority of them were labeled. She came to a stop in front of a door that was out of the way. It was dark wood with a silver handle and plaque that glinted in the light.

It had her name on it.

She was supposed to be an invisible companion. A hitchhiker through time and space. Hey. A hitchhiker through the galaxies. She could write a book. Nah, she'd get sued for that one.

She walked through the door and paused. The room was similar to her workshop in her briefcase. There was even a potions station set up next to a vent. She slowly walked through the room and placed a hand on the station. It went through it and she made a sound as she lost balance.

She was glad that she didn't seem to go through the floor. It was like a small part of her brain was concentrating on that so she wouldn't fall. She slowly stood up on her feet and brushed herself off. She decided to look through the rest of the room.

The Tardis had copied her pictures from her memories, the ones that proudly stood on her nightstand back at her flat. She was standing between two of her housemates, Gryffindors that mundane-born woman had gotten the names right, as they grinned up at the camera. Slowly but surely they began to pull at each other's faces and ears. She grinned at the sight before noticing a picture of her and Holmes. She still had no idea where he got that harpoon from. Or why it had been covered in blood. All she knew was that he had decided to take the tube home and had caused a scene.

She clicked her tongue at that and moved towards the fluffy looking bed. She focused on the bed and slowly put her hand out. She hit the soft duvet and let out a quiet cheer. Eventually, she was face down in a pillow with her eyes closed.

She was tired, but she didn't know what would happen if she slept. She was starting to feel as though she had drunk twenty cups of coffee, and it wasn't a good feeling. She was all jittery. She really wanted some sleep.

The Tardis let out a sound and she hummed in response. The others were back. She frowned as images passed through her mind. She was impressed. A small smile growing on her face at the kindness the ship was showing her.

The Tardis was a clever girl. She created a bridge between her hitchhiker's mind and her heart. What her riders went through her hitchhiker was informed of. She was rather fond of her newest rider.

"The names, Johana Watson, but everyone calls me John," She finally introduced, "My mum had a twisted sense of humor."

John's voice had been muffled, but the Tardis had caught it. She let out an amused sound. It slowly became alarmed when John was plucked from her insides. The last thing she heard from the young woman was a loud curse.