Hey there! This is my first attempt at a Doctor Who crossover so I'll try to do my best. This chapter takes place before Harry's trial in the Order of the Phoenix.
Harry followed Mr. Weasley down the street as he was leading them to the Ministry of Magic. It was really a shabby place, nothing unique about it in any way except the blue police telephone box; which was where Mr. Weasley was directing them to. The Ministry never seemed to try to blend in with Muggle society efficiently; they always managed to leave dead giveaways this time it being a police call box from the 1960's.
"Here we are, Harry. I'll go first." Mr. Weasley beamed at him. The wizard stepped inside and Harry went in after him, but the interior was not what he had expected beforehand. Harry gazed about the room in confusion; yes he was familiar to spaces being bigger on the inside from the World Cup, but in the center was an elaborate contraption strung with wires and levers and other items he could not name. He found that he was standing on a grated floor and the room was a dimly lit blue. Mr. Weasley seemed perplexed too and muttered something among the lines of,
"Always remodeling." Mr. Weasley then spun around to find a telephone hung on the back of the door. "Ah, you see! I knew I would find it." He picked the telephone up and tried dialing a number but failed at this task. Harry walked over to the device and noticed that it was actually a phony.
"Sir, this phone won't work. It's a fake. But I think there a telephone over there." Harry confessed as he pointed to the black telephone near the strange contraption he had noticed earlier.
"Aha! Yes, I see now. Still this is a great model of spectacular technology. Anyways, acute observations, my boy!" Mr. Weasley replied while patting Harry on the back and afterwards he strode over to the phone. Again, he attempted to dial the correct number into this specific telephone, yet Harry could tell from his now faltered smile he did not succeed.
"The call was invalid. Harry, I'm sorry. I think I brought us to the wrong phone box."
"Then where are we?" he asked. If this wasn't wizard-made then what was it? Harry defiantly knew that this wasn't Muggle technology; it was too complex. A voice suddenly called in a demanding tone from down a hall,
"Doctor? Is that you? I couldn't find you in the control room before; I've been looking bloody everywhere for you!" Harry hadn't even realized that there were hallways attached to this gigantic room. Mr. Weasley tugged on Harry's sleeve and whispered,
"This place seemed to be inhabited by people. Best not to disturb them. We should go."
A ginger woman then stomped into the room, but stopped when her gaze fell on them.
"Oh, I'm sorry! Did you hear what I was saying back there? I was just looking for my friend," she explained. She then bellowed down the hall, "I'm a little bit upset with him!"
"Um, where are we?" Harry inquired trying to ease the awkward tension that had arisen.
"I know it's a little overwhelming in here but just try to stay calm. It can be a bit mind-boggling for people; it was for me," she fretted. Another voice bounced off the walls seeming to come from another hallway, but this voice sounded more like a man's.
"Donna! What is it? Who are you talking to?" A man rushed from the hallway. He wore a pinstripe suit, a brown trench coat, and white converse. He sighed when he saw Harry and Mr. Weasley and fussed,
"Donna, did you let complete strangers in?"
"Of course not! They were standing right here when I came in." Mr. Weasley ambled up to the man and requested,
"I don't mean to be rude, whoever you are, but we seem to be a bit lost. I need to get to a telephone box."
"Well there's a telephone over there that you can use." he suggested just as Harry had before.
"No, I don't think you understand. I need to find a specific telephone box. I have a map," he clarified and offered the map he had constantly been scanning during the entire trip to this mysterious man.
"Unless if I'm mistaken; this is the only telephone box. It wasn't to my knowledge that there were multiple telephone boxes scattered across late 20th century London. Now that would be new." the man countered. The woman apparently named Donna questioned,
"Why do you need a specific phone box?"
"We're going to the Ministry of Magic. I'm on trial." Harry answered.
"Oh… don't tell me you're wizards." the man moaned. Harry was a bit perplexed at this man's bias against wizards, and he hoped that this man wasn't like his uncle in that respect.
"What? Wizards, seriously? Are you joking?" she queried mockingly.
"Okay. Could you two wait there for a second; I just need to… study the map. Come on, Donna!" The man pulled Donna into a hallway, and while Mr. Weasley was studying the inside of this odd box Harry crept away and eavesdropped on their conversation from a relatively safe distance.
"Doctor, what are you going on about wizards?" Donna pried.
"Look, Donna there's something I've haven't explained to you before. Yes there are wizards, actually worldwide. But they live in complete secrecy from all of society. They want Muggles, or non-magical people, to not know of their existence. Muggles do hear sometimes about wizards and create myths. You know Merlin?"
"Yeah, funny old wizard with a long beard? What about him?"
"He was real." the man stated simply.
"Well isn't that-" The man placed his index finger to Donna's mouth in the middle of her speaking and complained,
"No Donna, no. Just no." he removed his finger and carried on, "Anyways, they feared that the Muggle public would be afraid of them and try to prosecute them or riot. To avoid this; they just blend in with Muggles and carry on with their everyday lives. So to answer your question, yes there are wizards."
"What, so I could be walking on the street and there could be twenty other wizards walking by me?" Donna posed.
"Well, probably not twenty, but there could be wizards passing by you on the streets."
"Oh my God! And I didn't even ever notice!" she gasped.
"That's kind of the point Donna, to blend in."
"Are they aliens?" Donna pressed him.
"No, of course not. They're humans, just like you! Wizards just are humans who contain a higher capacity of radiation in their systems. Muggles do have radiation, but only a tiny amount just enough not to hurt them. I guess you could call wizards evolved humans who have the ability to use the high amount of radiation and channel it into what they call "spells". Their minds are able to control how the radiation is used which is why there are a variety of spells. It's really quite amazing really how it works, that they can possess this kind of potential."
"Then why did you complain about them before?" she asked him, which was a question Harry wanted to ask him too.
"Because getting involved with wizards is tricky, they have the Statue of Secrecy, their government is by far one of the most corrupt I've ever seen, and they are very prejudiced to Muggles like you. If even one parent of a child is a Muggle the whole family is not really respected by most. They classify their society into three groups: pure blood, half blood, and Muggle-born or a derogatory term Mudblood." Harry winced when he remembered from his second year where Malfoy called Hermione a Mudblood.
"That's terrible. But these people, I mean wizards, are nice. They don't seem half bad. Why don't we help them?"
"I am going to help them. And then they'll be off on their merry way while we go somewhere else, so the TARDIS isn't confused for an actual phone box for wizards to use. Really I was sure I locked her." The whole place seemed to hum and somehow Harry could tell it was in a mischievous manner and he was frightened for a moment, not really aware of what was happening.
"Really old girl? I know you have control of the locks, but it doesn't mean you have the right to unlock them when I don't tell you to!" Harry was now very bewildered by this man and by this point had no idea who he was talking to. In the way of which he was speaking, he didn't seem to be conversing with the ginger woman anymore. Harry edged away quietly, deciding that it was best he left then. It was not a moment too soon either as Mr. Weasley called,
"Harry! Oh there you are my boy; I was starting to wonder where you had gone off to." The man and Donna walked into the room.
"I'm sorry; I didn't catch what your names are. Could tell me?"
"I am Mr. Arthur Weasley and this is Mr. Harry Potter." Mr. Weasley introduced them.
"Nice to meet you! Well I guess you're wondering who we are and where you two are currently. This is Donna Noble, and I'm the Doctor."
"Doctor? Doctor who?" Mr. Weasley implored.
"It's just the Doctor. And basically right now you two are in my… Donna a little bit of help explaining?"
"You're in his ship. It's called the TARDIS, god knows why. And it's bigger on the inside." Donna specified.
"I didn't know ships were normally shaped like police boxes." Mr. Weasley seemed to think aloud.
"This one's special. Now let's figure out that map, shall we?" The Doctor proposed. He flattened it out and was smoothing the creases made by Mr. Weasley previously. Harry tried to walk over but only staggered in the process. The man called the Doctor seemed to notice and questioned,
"Harry, are you alright?" The answer was no, but he didn't feel like saying. His scar was burning to a higher degree than it ever had before, and Ron and Hermione would've probably passed this issue aside, for he had complained about it to them many times. He couldn't help but mumble,
"My scar." The Doctor glanced at Mr. Weasley and inquired,
"What does he mean by scar? Is it a birthmark?" Mr. Weasley looked grave at this question and answered,
"No. It is the imprint the Dark Lord left on Harry as a baby. Ron, his friend, my son, tells me that Harry has said it burns from time to time."
"Well, we can't have that, now can we? Now it's a good thing you ran into a doctor. Let's take a look." The Doctor crouched down to Harry's level and gazed at his forehead and brushed aside some of his bangs. "Phychic connection; that's a nasty little bugger." Donna trudged over to the Doctor and smacked him on the backside of his head.
"What was that for?" the Doctor whined.
"Just get to the point Spaceman." she scolded him.
"Okay Harry, I know we've only just met and I don't want you to be alarmed but I'm going to well, go inside your head to see what's in there. It won't hurt a bit." Before Harry could protest this man was already inside his mind. It was strange; memories from so long ago popped into his head. Like when Dudley pushed Harry off the swing when he stole his ice cream, or when the snake at the exhibit had talked to him when he was eleven. The memories became more recent such as when he and Hermione traveled through time to save Sirius and… Cedric's death. The graveyard. Voldemort. Barty Crouch Jr. And the dreams, the dreams he had dreamt in the year beforehand with Voldemort in them appeared in his mind. This was too much.
"CEDRIC!" he screamed at the top of his lungs. The Doctor then backed away slightly to give Harry space. He knew he was breathing heavily and he felt the sweat drip from his forehead.
"Donna, would you go get a glass of water for Harry?" The Doctor requested.
"Sure, no problem." she responded and scurried off in a hurry.
"Harry, do you know what exactly is in your head? Has anyone ever told you?"
"No, they said I was too young to know. I didn't know that a thing was inside my head. Doctor, what is it?"
"Do you tend to have a lot of bad dreams at night?" the Doctor interrogated.
"Yeah. Actually, all the time. Why?"
"And have you ever sleep-walked before or—" Donna cut his questions off by demanding,
"What does that got to do with anything? Are you trying to scare the living daylights out of him?" She handed Harry his glass of water and he accepted it readily.
"Harry, I think I know what's going on inside your mind. Just hold on." The Doctor yanked Donna back into the hallway. Harry was intrigued and thought that today was the day he might actually get some answers for all his questions. He again followed the pair of them and sat back in the place where he had listened in on their conversation from beforehand.
"You said something's 'inside his head'. What on earth does that mean? Is there something wrong with him?"
"I don't know how to explain this, but I'll do the best I can. You know how Mr. Weasley said about Harry's scar being an imprint of the Dark Lord?"
"Yeah, what did he mean by that? And who's the "Dark Lord"?" Donna quizzed.
"I'll get to that in a minute. The Dark Lord is Lord Voldemort, a diabolical wizard most don't even like to mention. He got to that evil state from being corrupted with power and from being lonely as a child. Now that can do many things to man, but to a wizard; only severe consequences lie ahead. He believed in killing all Muggles and all Muggle-born wizards and wanted to solely rule the world."
"What happened then? Obviously he didn't succeed at doing that."
"He almost did though. The wizards tried to stop him; they even formed a group called the Order of the Phoenix. I don't know if they're still around today though. Lord Voldemort was collecting followers to join his in his conquest. In the prime of his terror Lord Voldemort went to a house where none other than James and Lily Potter resided with their baby, Harry." Donna interrupted him,
"Wait. Hold on. How do you know so much about this? Especially when you said didn't like getting involved with wizards."
"I like reading books and I read some accounts from wizards of the story. Look, I like history; it doesn't matter to me whether it's about Muggles or wizards, it's all the same to me."
"Then why aren't they?" Donna asked. Harry knew what she meant by that and he believed the Doctor did too.
"Anyway, Voldemort burst into the home. He killed James Potter and went upstairs to find the rest of the family. And he did. He found Lily Potter holding the infant Harry in her arms. He murdered her too, and went to finish off Harry. He was ruthless. He tried to kill Harry with the killing curse but somehow he didn't succeed and turned into atoms. No one knows really what happens after that. I haven't really researched the matter much afterward. And Donna this is the part in my explanation where things get a little confusing, and I'll try as hard as possible to make sure you're on the same page. You see Lord Voldemort was so afraid of death, it is rumored that he spilt up his soul into several pieces. And somehow he has now regained a physical form and is… possessing Harry." Harry's mind suddenly started to spin and spin around and around as he felt the world was about to collapse around him.
"How is he doing that?" Donna urged.
"You know how I said he spilt his soul into several pieces?"
"Yeah, I don't know how he did that either but what has it got to do with this?"
"Because when Voldemort tried to kill Harry, his physical form was spilt into atoms and some of them went haywire. They didn't know where to go. So… part of Lord Voldemort's soul is in Harry. That's why there is the psychic connection between them and why it's so strong, strong enough to possess Harry. I just don't know how to explain this to him though." Harry stepped out of the corner he was hiding from and declared,
"Don't worry. You already have." Harry rushed back into the control room.
Hilarious yet suspenseful. What's Harry going to do? You'll see in the next chapter, I've got big plans ahead. Thanks for reading and please review!