(A/N) What ho? Back with another chapter for you all. As always it is for my dear Watson. We have three more chapters left for this oneshot and I am going to see how quickly I can write them all for you. When we last left of Lexi was attacked by the Cyberplanner. How is this going to workout?

Watson: Most likely it will be brilliant as always. *sips her tea*

Lock: Obviously, but they might not think so.

Watson: *Glares at the other readers* Well then I'll slap them.

Lock: *grins* I only need your approval Watson.

Watson: *nods* As it should be. *sips her tea*

Lock: Allons-y! The game my dear Doctor is on!

Lexi's POV

Mind Palace

I stood with the Cyberplanner in a barren room that was mostly dark around us with flashes of colour and words floating around us as the orange and blue lights played in the background. We were standing on something, but nothing was definite here. I glared at the mental image of the Cyberplanner that was in my head. She looked just like me only she had the Cyberwidgets attached to her face and she was wearing the same thing as I was, minus the coat and scarf.

"So what sort of duel do you suggest?" She challenged me and I walked over in the cyberscape and the room immediately turned into the living room of Baker Street. I pulled the sword off the wall in front of me before picking up my other sword. I threw her one of them and she caught it easily. "How did you do that?" She demanded of me and I smirked back at her.

"You said it yourself, my mind is more advanced than your average humans," I told her as I casually put my sword down by my side. I was starting to realize that I could control just as much as she could if not more. This was after all my mind and I knew it inside and out. I had a plan, but I had to bide my time to see if I could get it to work.

"A sword fight?" She asked me, changing the subject, but I could read a little fear in her eyes. She hadn't expected me to be able to fight back. I nodded at her as took up my fighting stance, holding my sword in my right hand. It was a jade's trick, but it would come in handy if this Cyberplanner turned out to be a good swordsmen.

"If you're so clever than beat me," I challenged her and she laughed at me as she dropped into her own fighting stance that mirrored my own.

"I've won already. I can access every part of your memory on sword fighting," The Cyberplanner told me and I narrowed my eyes at her and smirked slightly.

"Do you really think so?" I asked her and she frowned slightly before shaking her head and snapping her gaze up to me and looking at me in anger.

"You've gone and hidden your thoughts away! How?!" She yelled at me and flicked my head in the direction of her sword.

"Less talking. Unless you'd rather give up now," I taunted her and she rushed at me as I stepped back slightly and met her sword with mine so that the two clashed together with a loud sound of deadly steal scraping against deadly steal.

"Never," The Cyberplanner spat at me as she leaned in towards my face and I grinned before I pushed her back, causing her to stumble into the coffee table and fall backwards. She landed on the table and then jumped upright quickly as she yelled in range and charged towards me again.

Our swords met again and sparks flew from them as the steal grated against each other with the force of her attack. I parried her attack and countered with my own thrust towards her which she caught just in time. From the first few minutes of our duel I could tell that I was more skilled but she was stronger than I was. If I could tire her out then I could beat her. What she lacked in skills she made up for in her strength and that was what I had to watch out for. We entered into the deadly duel of wills as we danced around the living room of the flat. I backed away towards the kitchen and ducked just in time as she swung her sword at me and it embedded itself in the wood of the doorway where my head had been seconds before. I used her distraction as an advantage to slash her arm and I watched as she started bleeding from the cut. She growled at me and pulled her sword from the wall before backing me into the kitchen as her attacks grew in vigor. Our battle of wills had only just begun.

Third Person POV

Sherlock, the Doctor, and the Doctor's companions watched as Lexi closed her eyes, her breathing slightly quick as she stood completely still. The Doctor took out his sonic and scanned her with it looking down at the results of his scan, his eyes widening in shock. Every time he thought he couldn't be surprised by the two detectives they proved him wrong.

"The scan says she's in some sort of unconscious coma like state but her neuron activity is through the roof," The Doctor told them all as River lowered her blaster and put it away before reaching down to grab the blaster that Lexi had dropped. "It's as if she's retreated into her mind," The Doctor said as Rory pushed past Amy and Sherlock and took a pen light out of his vest. He opened one of Lexi's eyes and flashed the light over it, watching her eye for responsiveness.

"She's not responding either Doctor," Rory told him worriedly and Sherlock moved past them both and put his hands on either side of her head, titling it to each side as the others watched him.

"She's in her Mind Palace," Sherlock told them as he reluctantly stepped away from her. Every part of his being was telling him to fight and protect her, but he couldn't fight what was controlling her if it was her as well. The thing, the Cyberplanner as it was called, was using her mind. That was one thing that Sherlock was not going to risk because her mind was what made her his Lexi.

"Mind Palace, what's that?" Amy asked Sherlock and the consulting detective sighed in frustration.

"It would take too long to explain and I doubt that you would understand any of it," Sherlock snapped at her and Amy took a step away from the bristling detective. "Suffice to say she is perfectly alright for now," Sherlock told them and the Doctor and River exchanged a look. If Lexi somehow didn't make it out of this Sherlock wouldn't be either. It was obvious that their bond was stronger than even they had originally thought.

Lexi's POV

I fell down onto the couch as the Cyberplanner pushed me backwards and I blocked her sword quickly. So far we both had minor injuries and I was beginning to wonder if we could even tire each other out here. I kicked her in the stomach and sent her flying backwards as I got to my feet. As she growled in rage and rushed towards me again I jumped on top of the coffee table to give me a height advantage and brought my sword down heavily on hers. The flat was in ruins now. John's chair was sporting a huge hole through it from when she tried to stab me and the dining room table had crashed to the floor when she cut a leg off of it which sent papers falling to the floor and cluttering the space. It was becoming too dangerous to fight here so I changed our space into a large Council Chamber. I was surprised to see Mycroft standing behind the podium as was the Cyberplanner it seemed as we both lowered our swords.

"Mycroft, what are you doing here?" I asked the man frowning in confusion and he looked at me passively.

"How should I know, this is your mind," He told me and I shrugged at him. He was right. This was my mind. Hang on. If Mycroft could show up, did that mean anyone could? I quickly raised my sword as the Cyberplanner noticed my distraction and tried to use it to her advantage.

"Do pay attention Alexandria," Mycroft told me and I grunted as I kicked the Cyberplanner back.

"Yeah, thanks for that. Would have never thought of that on my own," I told Mycroft who huffed at me in irritation before I rushed at the Cyberplanner and lunged at her. We danced around each other, exchanging blows and she pushed me back, nicking the top of my nose with the end of her sword. I growled at her and rushed right back into it as we took advantage of the open space of our new fighting ground.

One thing I had realized. This was my mind and I controlled it. It was apparent to me that I seemed to have more control here than she did. If I could block her off and trap her in my Mind Place then I could take control again. It would have to take careful coordination though. If she suspected what I was trying to do than she would stop me. If I could take back control I could help Sherlock and the Doctor figure out what the Cybermen as he called them were planning. Even when the Cyberplanner was in control I could hear everything that was going on just the same as when I took control she could hear everything. If she was Miss Clever I was Miss Cleverer. She wouldn't be winning this duel because I was going to fight to keep my mind because I wouldn't leave Sherlock behind. I lunged at the Cyberplanner and we danced around each other dangerously as Mycroft watched us from the podium. Suddenly the Cyberplanner got the upper hand on me and she knocked me on the ground and stood over me with her sword raised. I winced, knowing I wouldn't have enough time to block her when suddenly the door crashed open behind us and she looked up as I looked upside down behind my head as John Watson walked into the room, his gun trained on the Cyberplanner.

"Who the hell are you?" The Cyberplanner asked him and he reached into his back pocket and took out a card and held it up to her.

"Captain John Watson, Fifth Northumberland Fusiliers. Now, get away from her," John told the Cyberplanner, his voice steady as he put away his card and raised both hands to his gun.

"How are you doing this?" The Cyberplanner demanded of me as she continued to hold her sword above me.

"Because I'm Alexandria MacKenna," I told her as I kicked her in the chest and sent her falling backwards so she was on the floor like me. I propped myself up on my elbows and stared at her with a smirk on my face. "I've been kidnapped by serial killers and survived, I've chased down and put away more murderers than all of NSY combined, I live with an army doctor and a consulting detective, fell in love with a sociopath, fought a psychopath, and if anyone knows my mind it's me. And you know what? I am human. Check my mind for one thing, what does humanity do? It makes people fight all the harder because that is what being human is," I told the Cyberplanner as we left the Council Chamber and entered the Cyber Sphere again and the images flashed above us of every chase after a criminal, every time I fired a gun, protected John or Sherlock, and when I faced down Moriarty. "You think you can beat me because I am human and you think I am weak, but let me tell you something," I said as I got to my feet. "I'm stronger than you could ever imagine because I know I have someone waiting for me when I win this," I told the Cyberplanner as I bent down and picked up her sword as she stared at me, not moving. I threw her sword in the air and flipped it, catching it by the blade as I held it out to her. "We duel until the death," I told her and she grabbed the hilt of her sword and glared at me before jumping to her feet.

"To the death," She agreed and we entered back into our battle of wills. I had a plan now for how I was going to trap her, but first I would need to get her to the part of my mind that I kept locked away from even myself. It was in that darkness that I would find the light. There were more dangers lurking in my Mind Palace than just a Cyberplanner and I doubted she would want to face all of that. I had survived things that would make lesser men fall. Could she say the same?