The Doctor found a book on celestials, paging through as quickly as she could. She was running out of time.
"Banishing sigil." She whispered, tracing the Gallifreyan script. Lucifer blasted through the doors of the library, tossing the broken device on the floor.
"Nice library. Can't wait to burn it down." He said. She worked quickly, designing the sigil that she knew would send him away for a few hours so she could get to London.
"HEY AGAIN!" She yelled, pressing down on the sigil. He charged at her, but the blast threw him away, lighting up the entire room. The TARDIS activated, spinning towards earth at top speed. The Doctor smiled in relief, knowing that she had enough time to help John and Sherlock face the Daleks, then enough time to rescue the others from Moriarty.
Sherlock did something he knew he would regret later. He turned himself in to the daleks. Molly, Mrs. Hudson, and Rosie watched in horror as he was taken up to their spaceship in a beam of blue light. He waved, smiling, as if it was the last time.
He opened his eyes, standing in a room, surrounded by daleks. John was by his side, and they would've hugged if they hadn't been trapped in a force field.
"Sherlock- Rosie?"
"She's with Molly. She's safe. The Doctor never came, and Moriarty is still on the loose."
"Moriarty?"
"He's in America." Sherlock said.
"SILENCE." A dalek said. "YOU ARE HERE TO BE EXTERMINATED."
"Why take us all the way up here?" John asked.
"WE WERE TOLD YOU WERE DIFFICULT."
"I like to think I'm difficult. I think you're difficult too. I've never been beaten so badly before. May I meet the dalek who beat Sherlock Holmes?"
"I AM THE DALEK." A dalek said, rolling forward.
"NO, I AM THE DALEK." A different Dalek said. Sherlock pressed something on his coat, and the energy field went down.
"THE ENERGY FIELD HAS BEEN DISRUPTED."
"Energy disperser." Sherlock said, running to the console. "I have my hand on your self destruct button. I press this button, you all go down in flames!"
"HOW DO YOU KNOW THAT IS THE SELF DESTRUCT BUTTON?!"
"It's never been pressed." Sherlock shrugged. "I know that for the same reason I know that you are all Time War Daleks, correct? Promise to leave this planet and keep your word or I will destroy you all. I know where Gallifrey is, and I can send the Time Lords after you unless you leave at once. The Doctor is coming, and he is bringing a storm with him!"
"Sherlock…"
"FINE. WE SURRENDER." The Daleks said. "WE WILL COME BACK."
"Yes, and you will surrender again too. I am Sherlock Holmes, this is my companion, Doctor John Watson, and we protect this planet!" Sherlock said. The Daleks beamed them back down, and pulled away their saucers just as the Doctor arrived.
"I've stalled Lucifer for a while." She said. "You got the Daleks away."
"Hardly anyone was hurt. Except maybe Anderson." Dr. Watson said.
"Great. Now we've got to find Moriarty."