"So, you're Sherlock? Oh I've heard about you! The great consulting-"
The Doctor was cut off by the clang of metal moving, and an electronic voice sounded from the corner: "DELETE!" "Off we go!" The Doctor added, and ran off in the exit direction, diverting through different corridors and paths, leaving the rest of the group to chase after him. Amy glanced back to check if the two new people were okay, and found them sprinting after her with the metal-man matching behind.
"In here!" The Doctor yelled, and they all piled inside a room the Doctor had dived into, which turned out to be a just-big-enough store-room. Though it was cramped, they seemed to have lost the machine.
"Doctor? What was that?" Rory asked anxiously, and even the Doctor looked a little worried.
"Oh, that? Yes, that's a bad, bad thing... Cyber man, always seem to like London." He announced, and closed his eyes, thinking. Rory drew his breathe to carry on but John spoke instead.
"Well, can we stop it? What do we do?" He voiced, but the Doctor was still thinking and muttering to himself.
"Ah, I'm sorry." Amy added. "He does this a lot. John was it?"
"Um, yeah. I was just wondering... are we safe in here?" He asked, and as if to reply to his question the wall beside them gained a crack from the Cyberman trying to gain entry, joined with the muffled cry of, "Delete!". Suddenly, the Doctor sprung up, yelled, and the party burst through the door and raced to the TARDIS.
...
Sherlock glanced over at Amy, irritated that she wasn't paying attention to him. He managed a half-smile towards Rory before thunder came from opposite the side wall, and they were running again. As the group stopped in front of the TARDIS, the Sherlock stopped and stared directly at the metal-man, analysing it within a matter of seconds. "Tall but jerk-moving, brain like receptor but with an electronic interface, judging by the hole in its right arm socket its faulty or damaged." He thought, and recklessly he drew out his gun and shot into the hole in its arm. For a moment the machine made a noise that reminded him slightly of pain, and it crashed to the floor. The Doctor sprinted behind it and waved the glowing screwdriver over the creature, and it made a strange whirring noise.
"Whew! That was good! It's all shut down now...Shall we take a look?" The Doctor exclaimed, and lifted the 'face' off of it...
The group peered over, as the Doctor set to work, scanning it with his screwdriver, and carried on talking to himself. Amy looked over to Sherlock and John, bemused, at John looking clueless and Sherlock staring at the machine, not moving. "Well, It seems this one was a little faulty, but I don't see why." The Doctor was cut off by Sherlock, who took over.
"The machine had been previously shot judging by the hole in its arm, which damaged the thought-control network, proving why it hesitated before taking action. The 'Cyberman' has a human body inside, but could not have put itself together, yet the technology isn't anything I've seen before. Which leaves me with this; who first shot it and where are the rest?"
Amy, John and Rory looked at him alarmed, while the Doctor laughed with joy. "Oh, I knew I'd like you!" He said, and started to haul the machine into the little police box. Sherlock frowned but decided to help him.
"Cyberman you see, they like to take over and wreck stuff, which is bad news for them when I'm around. But you!"
He turned to face Sherlock and left the metal body slumped at the police-box door. "You're brilliant! oh, sorry." He added, and turning to John. "You are too. I think it's time to show you both the TARDIS." He said, and opened the phone box door.
...