Donna linked her arm with the Doctors.
„l know you worry about Sherlock a lot. We'll find him and everything will be good again, you'll see."
„It's not easy to allow myself any hope" the Doctor finally confessed to his companion. „I lived a long time, thinking I had lost everyone and suddenly here he is alive and well. Maybe we should have left them alone."
This time it was Donna who shook her head.
„Don't say things like that" she tried to assure him. „You deserve something good too, like everyone else. Be happy that you found him and I'm sure when he finally remembers he'll be happy too."
The Doctor smiled emotionally at her, showing confidence again.
For a while they walked side by side in comfortable silence, finding nothing of importance. When they reached another storeroom, the Doctor felt dread creeping up on him. Something was horribly wrong. While Donna entered, the Timelord stopped at the threshold. He reached out with one hand and held Donna back.
"Donna, stop," he whispered in warning.
Confused the red haired woman turned around.
"Why," she asked. "Is something wrong?"
The Doctor nodded his head in the direction they were supposed to go. Sherlock stepped out of the shadows and Donna began to smile.
"Hello," she addressed him."Thank god, we finally found you. Are you alright?"
"No Donna, don't," the Doctor warned her, having seen and recognized what his companion had not.
He held her arm, urging her to following him out again, but when he turned around to leave he nearly collided with John, who blocked the way.
Donna gasped in shock when she saw the black metal at one of Johns temples, the vacant look in his eyes, then she was grabbed from behind and pulled away from the Doctor by Ayumi, who shared the same cruel fate.
"Let her go!" the Doctor demanded, his face suddenly stone cold. "You don't want to risk making me angry. Believe me you won't."
Maylene blocked his way before he could reach Donna and Ayumi. Sherlock and John joined them so, when Ayumi let go of Donna, she and the Doctor were surrounded by the four.
"What happened to them?" Donna asked, looking at their former friends.
"They're controlled by cybermite," the Doctor started to explain to his companion. "They're construction units, usually accompanying cybermen." Then he addressed the others. "So where are they? The cybermen, where have you hid them?"
"There are no cybermen," Maylene answered. "We are alone. Crash landed here, need the defective Timelords to repair the ship, need their energy to leave."
"You're a fully functioning Timelord" John continued." An even better option for us to leave this place behind."
"With you we can take over this world" Ayumi added."And many more after this. But we don't need the human."
"Don't touch her" the Doctor warned, holding Donna as close to him as possible. "Let her go and I surrender to you." Then he turned to Donna "Please, you have to leave. Go back to the Tardis as fast as you can."
The red haired woman nodded, not happy to leave the Doctor alone but knowing better than to argue with him.
"We agree" Sherlock finally agreed and John stepped aside, opening the circle, they had formed. "This body is failing fast, we need you as replacement."
As Donna had reached the door, the young boy joined the others, coming to a stop in front of the Doctor, looking up at him.
He knew he was going to die, Sherlock could feel his body shutting down, there was no way he was going to survive. But if he could at least help to safe John and the others his death wouldn't be for nothing.
He had started to examine this growing light in the back of his head. It was still held back by some kind of wall but the power of that energy was wearing it down slowly but surely.
Sherlock knew the cybermite were linked to each other, he could hear them communicating among themselves in his head. So if he tore down the mental wall, setting free whatever was behind, it hopefully was enough to kill this parasites dead once and for all.
With his last remaining strength Sherlock ripped open the wall in his head.