Author's Note: Apologies for the slight delay in updates. I just wanted to let you guys know that this story has been planned out ahead of time. It's mainly a matter of editing regarding future chapters at this point.

Without further ado, here is the next chapter (please excuse my sprinkling in a couple of references in this particular part. See if you can spot them, btw). :-)


the two Cybermen squeezing Barty's arms forced him to his feet. He continued to thrash about madly, struggling to free his arms from their tight grips. But even with the Doctor's increased strength, it was to no avail as the Cybermen dragged him out of Lumic's office.

Still, Barty dug his trainers into the green carpet, scuffing it as he tried to slow them down. All the while, he raved and shouted, "I'm your son! Your son! Doesn't that mean anything to you!?"

But Lumic turned his back upon him, folding his arms behind his back as he stared imperiously through the emerald curtains into the orangish glow of the setting sun.

Barty thrashed about, trying to pull himself free of the Cybermen's grip as they dragged him forcibly out of Lumic's office and into a pristine, white hallway that eerily resembled an abandoned hospital with fluorescent lights flickering at changing intervals.

He wished he had his magic or even the sonic screwdriver right now, but the latter had clattered somewhere within the vents when he fell through the open grate. Struggling to break free like a Muggle, Barty was determined that he would not be 'upgraded' by any means. Heck, if Lumic thought that turning people into Cybermen was considered an upgrade, then he had some serious issues to take care of.

Most of all, he couldn't believe that what Lumic had said was true. He looked exactly like his father, had a study nearly identical to the one back at their home; everything within it had been as neat and meticulous as everything else his father had deemed to prioritize in his life. Then again, Barty currently found himself residing in the body of an alien that was over 903 years old who appeared exactly like himself to a tee, save for a few minor discrepancies. Could it have been true that this Lumic was a mere doppelganger of his father just as the Doctor was to Barty?

He was so lost in thought, that Barty didn't notice the grip of the Cybermen slacken before they tumbled onto the blindingly white floor with a crash. Stumbling as he regained his footing, Barty twisted around when he heard a familiar whirring sound and was pleased to see Donna. She grabbed him a tad roughly by the necktie, pulling him around the corner of the hallway.

"Donna! Oh, thank Merlin! Thanks for—OOF!"

Barty was taken aback when he was pushed into a room. He tripped over a metal bucket and crashed down flat on his back while Donna tossed aside the trench coat into a corner.

"Another broom closet? Why—" he began, when he saw Donna standing over him, completely frantic. She clutched tightly onto a mop while a firm grip remained on the sonic screwdriver.

"W-who the bloody hell are you!?" she demanded, waving the mop in her hand threateningly at him.

"Donna, you know who I am. I'm the Doc—Ack!" Barty gasped out as the mop was jabbed in his stomach.

"No, you bloody well are not the Doctor!" shouted Donna. "I knew something was wrong with you. The Doctor would never talk about hurting or killing another person if he can help it. And now I know the reason why—it's because you are not the Doctor! Who are you and what have you done with him!?"

"Donna, please, I–"

"And how do you know my name?" shrieked Donna, her voice rising in fear.

"You told me earlier in the TARDIS."

"Were you spying on us? Me and the Doctor?" Donna went on, ignoring him. "Oh God….I know what you are. You're a bloody Martian that's possessed the Doctor!"

"What?" said Barty, completely flummoxed by her words. How in the world Donna could have ever come to that conclusion was beyond him.

"You are a Martian, aren't you! Oh, this is just great. I'm trapped inside a nutty robot factory with a real honest-to-goodness Martian!" Donna ranted. "Is this because I kept calling the Doctor one? Is this some sort of joke for petty revenge? Well I don't find this funny at all, Martian Boy!"

Barty raised his hands up, attempting to placate the furious Donna when she prodded the mop in his stomach again.

"Stop that! I'm not a bloody Martian. I'm not even from Mars! I'm a human! Completely human!" argued Barty, pushing aside the mop. "Well, I was human."

"What do you mean by that?" demanded Donna.

"I'm not even sure how it happened, but—oh, will you quit bleeping me with that!" said Barty, irritated by Donna aiming the sonic directly at him, shielding his eyes as the blue light blinded them.

"Well, I'm not taking any chances with you, Martian Boy!"

"I already told you, I am human! And if I did want to hurt you, I would've done it by now, wouldn't I?"

Donna hesitated a moment before realizing that Barty made a good point. She flicked off the sonic, though she still stood at a distance from Barty with the mop as her sole weapon.

"Then where's the Doctor? Where is he? What have you done with him?" demanded Donna. "If you don't bring him back, oh I will show you some pain, sunshine, believe me!"

"I haven't done anything! I swear! One minute I'm about to receive the Dementor's Kiss, the next, I wake up and find that I'm in the body of some barmy alien who happens to have quite an insanely irritating ginger companion—it wouldn't kill you to shut your mouth from time to time, you've got quite the gob on you, you know that—and…..oh no! Oh no, no, no, no!"

Panic suddenly overtook Barty. He had a look of horror as a sudden thought dawned upon him.

"You better panic after that insult you just threw at me, ya alien git!" said Donna, about to jab him again when Barty dodged the blow, backing away as best he could.

"For the last time—I. Am. Not. An. Alien!" Barty yelled in frustration. He then concentrated hard on his hands, looking them over closely from front to back, unnerved by how familiar they appeared despite them being the Doctor's. "Besides, this has nothing to do with insulting a lowly Muggle like you! It's….I've just realized…if I'm here in the Doctor's body, then he must be somewhere in mine."

"Body swap? What the bloody hell? Is that even possible?" Donna gasped in horror. "What am I saying? If giant flippin' wasps and living pieces of waving fat are real, then of course it is. Sure. Why not!" she rambled, more to herself than to Barty.

"You don't understand," began Barty, talking faster now. "If the Doctor is in my body then he would have supply to my magic; Magic which he doesn't even know how to control."

"Magic? What the hell? Is this Harry Potter or something?" said Donna.

"Harry Potter? You know the boy?" asked Barty, quite astonished, quickly forgetting his recent panic. How could a Muggle like her know who The Boy Who Lived was?

"Well, duh! Who doesn't know who he is when the flippin' books and films are known by everyone in the world."

"'Films'? I know that some books have talked about Potter surviving the Killing Curse but what do you mean, 'films'? How could there be Muggle films about him?" Barty asked, arching an eyebrow.

"Have you been living under a rock or something? Even I know about them and I've only ever watched the first four movies with the Doctor. The fourth one was complete rubbish, by the way," Donna added unhelpfully.

Staring at her with his mouth agape, Barty closed it shut and shook his head.

"That's impossible. You Muggles can't have known about Potter, let alone about us wizards."

"Oh, come off it. You actually believe that you are a wizard from Harry Potter? Oh, this is just fantastic. Really rich, this is," Donna began ranting to herself again. "I get stuck with a completely loony man who believes he's some sort of wizard from Harry Potter."

"I am a wizard," Barty said defiantly, now pushing himself to his feet, insulted that Donna didn't believe him. "And I am more powerful in ways in which you couldn't even begin to imagine."

"Prove it. Wave your magic wand and show me a trick, Wizard Boy," taunted Donna, seemingly gaining back her confidence.

"What part of 'body swap' don't you understand?" said Barty. "I can't do magic while I'm in the Doctor's body."

"Can't you at least pull a rabbit out of a hat or something?"

Barty glared at her. "That is mere Muggle sleight of hand and it is highly demeaning that you even mention that."

"Okay, fine," Donna rolled her eyes, trying to humor him. "If you are a wizard from Harry Potter, who are you, then? Sirius Black? Ron Weasley? Perfidious Snatch?"

Barty felt his blood boil as Donna began teasing him again. How dare she even think him to be the dense Sirius Black or that Weasley boy. And who the heck was Perfidious Snatch? Was she messing with him, or was she just that thick?

"My name is Barty."

Donna snorted. "That's rich. What next, Bart? You're going to tell me your last name is Simpson?"

"It's Barty. Barty Crouch….er, Junior," but even as he said it, Barty hesitated, embarrassed that he had to share the name of his cold-hearted father.

"That's a daft name. Wait a minute, I think I've heard it before…no way!" Donna's eyes lit up as she began to chortle gleefully.

"What? What's so funny about my name?" Barty asked hotly. He wished she would quit laughing at him.

"You were the bloke with that crazy snake tongue!" she cackled.

"What? What snake tongue?" asked Barty, running his tongue over his teeth. Sure enough, it felt completely normal. Well, considering he was currently the Doctor, that would track either way.

"Don't you remember? You were in that courtroom and when that greasy-haired fellow said your name, you went all mad trying to attack your father and started poking your tongue out like a snake! And the way he said your name! It took fifty years to finish that dramatic bit," Donna bent double now, clutching a stitch in her side as she repeated the line with an added flair, "Barty Crouch…..Junior!"

Barty grit his teeth as he tried to set things straight in his boiling anger that was now reaching its precipice.

"That isn't even remotely what happened. I did not try to attack my father in the courtroom. None of that is true."

"Don't have a cow, Bart. It's just a movie," said Donna offhandedly, her reference flying right over the head of the wizard like a Fizzing Whizzbee.

But it wouldn't have mattered even if Barty had understood it, for that nonchalant comment was the final straw for him.

"Oh, 'just a movie' is it? It just so happens that that 'movie' made a mockery of one of the single worst moments of my life!" Barty lashed out angrily.

A wave of fury embroiled him. It exploded through the dam at the forefront of his mind as he began to rave about the memory he always fought to suppress.

"That trial was nothing more than a complete sham! My father only allowed one for my poor mother's sake, and even then all he did was put on a show to demonstrate how much he despised me! You have no idea how humiliating that felt. You have no idea!" he roared, kicking aside the empty metal bucket on the floor.

He paced back and forth within the tiny broom closet, running his hands through his hair as he shook wildly with rage.

"I was chained up, and for what? For all my father knew, I could've simply been found at the wrong place at the wrong time that night. But did he even stop to consider that? Did he listen to my pleas for mercy? Oh no. He watched me cry out. And what did he do? He sent me to Azkaban! His own son! But it didn't matter to him. Nothing could get in the way of his ambition of becoming Minister of Magic. No person thought to be a Death Eater could stand in his path. Even if it meant sending his own flesh and blood to the dementors—"

Barty suddenly froze, a shiver creeping up his spine. He quickly turned away from Donna. 'Not here…..the dementors are not here,' he reminded himself.

A sudden silence filled the broom closet. With his deep, shuddering breaths seeming to echo along the small walls, Barty wished Donna would just say something for once. Why did he have to lose control and share that horrible moment of his life with her?

He shut his eyes and leaned his head against the wall, pounding a fist against it. Thanks to his momentary loss of control over his emotions, there went the Doctor's memories banging around his head once again. He fought to repress them as they mixed around with his own. It took a moment but he finally managed to force them back with slight difficulty.

His head was throbbing. It was now becoming harder to push away the Time Lord's memories even with the help of Occlumency. Barty had caught glimpses of past faces during his mental lapse—the nine other incarnations the Time Lord had embodied, as well as those of friends who were long gone. A few of them in quite disturbing ways, too, as he caught flashes of a young brown-haired boy named Adric who had sacrificed himself on an exploding Cybermen ship. How did Barty know he wouldn't succumb to the same fate as that poor lad when he was currently surrounded by Cybermen on all fronts?

'I could really go for some Calming Draught right now,' he thought as he massaged his temples, trying to dispel the unwanted echoes of a past that was not his own.

Finally, after a few minutes, Donna cleared her throat and set aside the mop against the wall behind her.

"Like I said, the fourth film was complete rubbish," she said matter-of-factly, continuing on as though she hadn't heard what he'd just said. "We should probably get back to the TARDIS. Maybe we can figure out how to find the Doctor from there and sort out this...er, freaky body swap without having to worry about these Cyber thingies threatening to kill us."

Barty nodded his head slowly and opened his eyes. Though he felt embarrassed at his outburst, he quickly recomposed himself as he, too, cleared his throat and walked over to her.

"Quite right. Wouldn't want to 'upgrade' into anything like that," he said quietly, holding out a hand for the sonic screwdriver and Donna handed it over compliantly. He tossed it up and caught it in a very Doctor-like manner.

"More like downgrade if you ask me," Donna supplied, passing him the trench coat.

Barty placed the sonic between his teeth as he slipped back into the long brown overcoat. Something in the back of his head told him that he would be quite upset if he managed to lose that coat. It was his favorite, he thought as he adjusted it with a fond smile. He then realized what he was doing and his smile promptly faded.

'No. It's the Doctor's favorite. You are not the Doctor,' he berated himself as he held the sonic back in his hands and examined it in deep thought, the blue light of its crystal reflecting off him.

He had to be careful. He was beginning to think like the Doctor. And he wasn't him. He wasn't a Time Lord. He wasn't an alien from a planet called Gallifrey. He was from Earth. He was a human. He was a wizard.

Trying to brush off his unsettling mental lapse, he turned back to Donna. "Right. Let's go then…What?"

"You didn't say Allons-y."

"What?" Barty asked, confused.

"Nevermind," Donna dismissed him. Although she looked quite hurt, she still managed to add snidely, "Are you sure you don't want to go through the vents again?"

"Don't be so daft. There aren't even any vents in this room," admonished Barty, staring up at the ceiling for a brief second before tucking the sonic back inside his coat.

"How do you know the Cybermen won't get us when we step outside there?" Donna asked.

"I don't."

"Excuse me—What?" Donna questioned. "What if those robots get us? Remember that lab we found when we first came here? Yeah? There were flippin' brains and a corpse inside there! A corpse!"

"We're just going to have to be very careful, then," Barty told her as he stepped towards the door.

"Because that's worked out great so far," Donna commented, rolling her eyes.

"Listen, after spending an entire year disguised as Mad-Eye Moody, there was at least one thing I've learned that was worthwhile. And that thing is going to help get us out of here to safety," said Barty, wheeling around to face her with a determined look.

"What's that?" asked Donna.

"Constant vigilance," he replied. "Besides, I figure as long as I have the Doctor's brain—"

"—that you should start using it more?"

Barty shot Donna a scathing look. "Would you like to do the honors and lead us out?"

Donna raised her hands, signaling that she was going to refrain from belittling him any further.

"Anyways, as long as I have the Doctor's brain, I can sense the TARDIS. It's somehow connected to my thoughts now. And as long as I'm able to hear it, we'll be able to find it," finished Barty.

He was deadset on telling the alien ship off if it wasn't keen on helping them out. Maybe he would point out who's body he was in and use that as leverage against its increasingly disparaging taunts if he had to.

"So you'll be like a dog tracking a bone," said Donna, cottoning on.

"Or a Niffler finding treasure," supplied Barty, twisting the door handle. After peering around cautiously, he motioned for Donna to follow him back out into the deadly hallways in their search for the TARDIS.