yamx: (Default)
yamx ([personal profile] yamx) wrote2011-08-10 01:19 pm

Fic: Sherlock Holmes and the Adventure of the Blue Box (3/7)

Doctor Who/BBC Sherlock Crossover
Title: Sherlock Holmes and the Adventure of the Blue Box
Author: [personal profile] yamx
Beta: [profile] canaana & [personal profile] dameruth
Rating: All Ages
Spoilers: DW: The Doctor Dances; Sherlock: The Great Game
Characters: Ninth Doctor, Sherlock Holmes, Rose Tyler, Jack Harkness, John Watson, other characters from both shows, peripheral OCs.
Disclaimer: This is a work of fanfiction; the characters are the property of the BBC and used here without permission. No money was made.
Summary: John and Sherlock stumble across a strange blue box in Trafalgar Square. And that's the least weird thing to happen that day.
A/N: For [livejournal.com profile] wendymr, who never reads crossovers but requested one anyway. :)

I had to fiddle with some canon details (of both shows) to make this crossover fit. It's set between The Boom Town and Bad Wolf for Doctor Who, and after The Blind Banker for Sherlock.

Chapter 1   Chapter 2


Chapter Three


John watched the men – Jack and Doctor Something-or-other, from what he'd gathered – working on a machine that looked like a cross between a Commodore 64, an ultrasound machine, and a parasol. They were speaking in fast techno-babble that reminded him of Data and Geordi on Star Trek.

Sherlock wandered around looking at things, completely unperturbed by the frequent sharp glances from the Doctor. He finally slumped down in the jump seat by the console and took out his mobile phone.

A few minutes later, the blonde – Rose, apparently, and clearly the most normal one in this bunch – returned, carrying a huge volume. "Doctor, I don't know if this is right. It says The Complete Sherlock Holmes on the cover, but there's stuff missing."

The Doctor took the book from her and thumbed through it, much faster than anyone could read. "What are you talking about? It's all here."

"No! Look, the Reichenbach Falls stuff is missing! And the one where he comes back!"

The Doctor frowned. "Reichenbach Falls? What are you on about?"

Rose shot a glance at Sherlock. "Oh, you know. The story where... the story with Moriarty. It was my favorite as a kid."

John looked at Sherlock, startled. The name Moriarty had been following them around for weeks, but this was the strangest circumstance in which they'd encountered it yet.

Sherlock's voice was suddenly cold and dangerous. "What do you know about Moriarty?"

The Doctor just shook his head, looking at Rose.

"He's... he's a criminal master mind. Sherlock Holmes's arch enemy? Doctor, you must remember!"

The Doctor shook his head. "Never heard of him. Was never in the books. An' I suspect we may have found the root of the problem. Because clearly he was when you read them." He looked from John to Sherlock. "An' you two know who Moriarty is, don't you?"

Sherlock huffed and turned away. John sighed. "We don't really know, no. Sherlock's been trying to find out, but hasn't managed."

"Yet!" Sherlock added peevishly. "I haven't managed yet. As your little friend says, he's a criminal mastermind. I can't be expected to catch him overnight."

The bloke called Jack spoke up. "So... If Rose remembers him being in the stories, but you don't, and these guys know about him, too... That means he's the linchpin this all hangs on, doesn't it?"

The Doctor's lips became as thin as a knife's edge. "Must be. An' that's very bad news."

"Oh?" Sherlock asked. "Scared of him, are you?"

The Doctor grunted. "Very few people who could cross the line between reality and fiction like that. Takes a lot of know-how. Only about five people who could do it, and four of them are dead."

"Who's the fifth?" Rose asked.

"Me. And I didn't do it, so I must be wrong about one of the others."

"Or it's someone else you haven't heard of," John suggested. He couldn't quite believe that he was suggesting that the ability to cross fact and fiction might be more common than the alien doctor thought.

The Doctor shook his head. "Nah. To do this, you'd need a Spark of Dji'Niyess, and there was only one place where those existed."

"Was?" Sherlock raised an eyebrow.

Rose made to put a hand on the Doctor's shoulder, but he shook his head and strode back to the machine he and Jack had been working on. She exchanged a sad look with Jack. John could see they understood more than had been said.

"Point is, there aren't any anymore." The Doctor tightened some screws with rather more force than seemed necessary.

"So... isn't it good if... one of them is still around?" Jack asked with a gentleness John hadn't seen from him before. He wondered whom Jack meant by "them."

The Doctor shook his head. "Depends on which one it is. Though, really, anyone who'd play with reality like this... probably not good news."

Rose stepped closer. "But at least it'd mean you wouldn't be–"

"Know fully well what it would mean," the Doctor snapped. "Not all about me, Rose."

Rose's face fell and she took a step back. Jack got up to hug her, shooting the Doctor a disapproving glance. John really wanted to step outside to give them some privacy, but there was no way Sherlock would budge.

The alien seemed chagrined for a moment, then he went back to fiddling with the machine. "Important, this. Maybe the most important thing we've ever done." He looked up at his companions. "You with me?" There was a note of pleading in his voice that reminded John eerily of Sherlock when he needed help but couldn't admit it.

They both nodded. "Always," Jack said. John recognized the emotion, if not the tone. Unwavering loyalty, even in the face of having to put up with being treated as less than equal. Been there, done that, never stopped.

Rose was about to add something when Sherlock spoke up. "I hate to interrupt your family drama, but I believe you were about to try to find Moriarty?"

"Wrong. Was about to find the root of this disturbance – which would be the Spark of Dji'Niyess. Need it to fix this."

"You mean... make us fictional again?" John swallowed. He'd been willing to risk his life for Queen and country, so he certainly was willing to risk it if the alternative was all of reality collapsing, but it seemed a bit unfair, after all he'd been through, to be told his whole life was some penny dreadful and then lose it in the bargain.

The Doctor sent him a half-smile. "We'll see. Might not come to that." He handed Jack a small device linked to the big one with what looked like an old-fashioned receiver cable. "Keep this stabilized."

Jack nodded. "Yes, sir." John raised an eyebrow at the precise military tone. Had Jack been in the forces? Who was he to the Doctor? A minute ago, they'd sounded like family, now they seemed like superior officer and subordinate. And Jack looked equally comfortable in either role.

The Doctor pressed a series of buttons. The machine started pumping, making sounds like a steam engine of yore. Jack fiddled with a dial, staring fixedly at a bright green read out, while the Doctor adjusted levers and switches, cursing under his breath. Sherlock was still playing with his phone – he looked for all the world like he was texting, though John suspected he was recording this whole thing for later study.

Finally, the Doctor threw up his hands in defeat. "Useless, this. Can see where the lines between reality and fiction are dissolving, an' the pattern's typical for a Spark of Dji'Niyess, but I can't narrow it down properly. Well, I can tell it's somewhere in London... Suppose that's something, but we can't very well search the entire city."

"Sorry, Doc." Jack put down his controller. "Couldn't keep it any narrower."

The Doctor shook his head. "Not your fault, lad. You did fine. Too much interference here – too many temporal twirls and eddies. Most of 'em are probably my fault, or will be. Though there's something strange going on down in the Docklands. Will have to keep an eye on that. But it's not the gem, an' that's more important right now."

Sherlock perked up. "The Spark of Dji'Niyess is a gem?"

"Yeah. Well, sort of. It's a kind of crystal only found in one place in the universe, and it'd have to be cut into a very specific shape to work as a catalyst for this type of thing."

Sherlock cocked his head. "A sideways figure eight, about three inches across, with an upside-down triangle in the middle and various small notches and etchings?" he asked.

The Doctor stared, dumbfounded. "How'd you know?" John grinned to himself. Even aliens could be baffled by the phenomenon that was Sherlock.

"Times." Sherlock held out his hand. John pulled the newspaper from the large outer pocket of his coat and handed it to him, curious to see what Sherlock had spotted this time that everyone else had missed. Sherlock unfolded it and shook out the crumples, then pointed at a picture on the first page of the Arts section.

It was the photo of the Venetian altarpiece that he'd declared a forgery over breakfast. The top of its middle panel was adorned by a jewel in the shape of a sideways figure eight with a triangle in the middle. Sherlock grinned smugly.

"That's it? It's in the National Museum?" the Doctor sputtered.

"No," Sherlock said. "This is a forgery. See, the–"

"Ah, right. Obvious," the Doctor interrupted.

Sherlock looked flummoxed. "You see it?"

"Not blind, am I?"

John exchange a glance of mutual understanding with Jack and Rose, who were looking at the picture over the Doctor's shoulder.

"So then, how do we find the original?" the Doctor asked.

"Well, we were on our way to the museum when we got distracted by your box," John offered. "Maybe we should all–"

"Pointless!" Sherlock exclaimed. "Clearly, this is much bigger than we thought. What we need is lots of monkeys to do the legwork." He strode towards the door.

The Doctor followed, still holding the Times. Rose and Jack scrambled to keep up with him.

"Where are we going?" Rose asked.

The Doctor rolled his eyes. "Scotland Yard," he said just as Sherlock opened his mouth to reply.

John had to suppress a grin at the peeved annoyance on his friend's face. All those times Sherlock had complained about not having "a single intelligent soul who can at least half keep up with me!" came back to him. "Be careful what you wish for," he mumbled as he joined the others. The slight stiffening in Sherlock's shoulders made him wonder if he'd heard. The low chuckle from the Doctor made him sure that he had.

Chapter 4