"STOP!"

"Is this an alien?"

"What are you doing? Put your hands down!"

Plink!

"What was that?"

"That."

"Uh, whatever! Come with me! And no tricks!"

"Wouldn't dream of it."

Footsteps echoed throughout the TARDIS, but Sherlock waited until they were long gone before cautiously stepping out. Remembering the plinking sound from earlier, he knelt down and picked up the Doctor's sonic screwdriver. He held it up studying it.

'The Doctor wants me to use this somehow?' he thought to himself. Annoyed, he dropped his arm, and turned in the direction the Cov Neen took John and the Doctor. 'I hate being out of my depth. I suppose it'd be good to fine a control panel.'

'Technically,' he thought to himself. 'We got here through basic logic and reasoning. So it shouldn't be that hard to find a control room, if the Cov Neen are using technology, which I assume they are. So, if I find a map of the power station, I can find the old control room, which I bet they're reusing.'

Suddenly, Sherlock heard voices from around a bend, and he quickly hid in a corridor. The Cov Neen walked by him, none the wiser.

"This place is so dirty, would it kill them to clean it?"

"Haven't heard you offer yet, Sa-yu."

"You haven't offered either!!"

'I also can't get caught,' Sherlock noted, poking his head out. He watched their backs recede, and then stepped out, continuing on his way, looking on the walls for a map. 'It's weird, how much they resemble humans. It's almost uncanny.' They even speak English, although that might just be the TARDIS... no, if they were out abducting children then they must speak our languages. Odd.'

Suddenly he stopped, fingers hovering over a map. 'Finally.'

Studying it closely, he traced the paths, first finding where he was, then following it to the control room. It was a simple enough path, and Sherlock quickly memorized it. He straightened back up, and started moving again.

He looked down at the Doctor's sonic screwdriver in his hand, looking for some way to activate it. Fumbling around with it, he pressed a button, and it lit up with the familiar buzzing sound. Quickly, Sherlock took his finger off, and it went silent again.

'Well, now I can turn it on...' Sherlock thought. 'But what do I use it for?'

Suddenly, Sherlock paused, distracted by sudden light. He looked up to see that he had stopped right in front of a doorway that opened up to a huge room. Making sure to keep out of sight, Sherlock slowly peeked in. His eyes widened when he saw what was inside.

The room was huge, bigger than some of the rooms in the Buckingham Palace. It was massive, but that's not what caught Sherlock's attention. In the middle of the room were about fifty people or more, all standing in a clump. They all had a expressionless face on, and they weren't moving. And right in front of them was Rosalind, liking unlike her usual hyper self with the uncaring expression on. Sherlock didn't like it.

 The Doctor and John stood in front of the group of people, staring at them, and the Cov Neen seemed to be telling them something. Probably more instructions.

'Why aren't they going anywhere?' Sherlock thought to himself, studying them. He was still a pretty good distance away, so he couldn't study them up close. 'There's only one guard, and it's attention is on John and the Doctor. What's stopping them...?'

Suddenly, the sound of talking hit Sherlock's ears, and he leaned closer. The echo must have carried their conversation over to him.

"Doctor?" that was John's voice. He sounded angry. 

'Understandable.'

"Doctor, why aren't they moving?" John asked. "They're just standing there... Why haven't they run away yet?"

Sherlock heard a chuckle, and, logically assuming it wasn't John or the Doctor, figured it was the Cov Neen.

"I have a guess on that actually," and finally, the Doctor. He sounded annoyed. "The transporter must have done something, didn't it?"

The Cov Neen didn't answer, but Sherlock would have imagined it either nodded or shrugged.

"It did something to their brains," the Doctor figured. "And then you lined them like this, in every country in this world, and them what? You can't use them for work if they're like this."

"Even if I knew, would you really expect me to tell you?"

"...No, but I expected your facial expressions to give something away, and I was right."

"Huh?"

The Doctor's pride suddenly sounded in his voice. "I think your gathering these people to harvest energy from them, for your ship that's so cleverly hidden up there."

Sherlock imagined the Doctor's face was smug right now, while the Cov Neen probably looked angry.

"Although, it's ironic," the Doctor continued, still heavily with smugness. "It's an almost flawless plan, but the the simplest thing could end it, couldn't it? You need all of these for your plan to work, and if you don't have all of these clumps of people, every single one, your plan will fail right?"

"Uh... no-!"

"But all it'd take to snap these people out of you brainwashing is something like an explosion, right?"

"Well, uh..."

"A loud bang!" the Doctor shouted triumphantly. " Something like... this!!"

Hearing that, Sherlock looked around the bend to see what was going on, and saw that the Doctor had tossed something up and stepped back, pulling John along with him. The Cov Neen was shooting, and raising their gun.

'Well,' Sherlock thought. 'This is going off me original plan, but I guess I have to go along with it. The Doctor better know what he's doing, John would be sad if Rosalind died.'

Sherlock stepped out in the open, and raised his arm, the sonic screwdriver pointing to the the object. It looked like a tiny silver packet.

'Hmm,' he thought. 'Maybe I'd be sad too.'

He pressed the button on the sonic screwdriver, and the parcel exploded with a loud bang, and a brilliant light.

Sherlock lowered his arm with the light faded. He looked to his left and saw the people looking around with confusion. Some were crying. But he didn't care about them, because, he saw Rosalind looking from him to John with a huge smile on her little face. He smiled back.

"NO!" the Cov Neen shouted. They were looking around in a blind rage, waving their gun around. But before they could shoot it, John was on they, pining them to the ground and taking their gun away.

'I guess it worked,' Sherlock thought. 'That's a surprise. Now we only got the rest to worry about.'