The Professor hunched over Clara as he cradled her body while sitting at the door to Mr Gold's Pawn Shop. He didn't know how long he and Clara had been gone from Storybrooke. First, they were on Skaro with the Doctor, and then Osgood summoned them to deal with the Zygon Crisis before a friend of theirs, Rigsy, made contact with them, which led to Clara sacrificing herself to save Rigsy. But she wasn't dead. At least, not yet. He could feel a slither of life holding on. The magic inside of her – their magic – still giving her life.

The sun cast its light over Storybrooke, casting a familiar shadow over the Professor and Clara. He looked up and saw Mr Gold standing over them. "You're alive," the Professor said. "How?"

"Let's just say I needed a much-needed rest," Mr Gold said as he knelt beside the Time Lord, looking over at Clara. "What happened here?"

"Long story. But, um … we met this friend of ours. He was in trouble, and Clara thought she'd help. That her magic – our love – would be strong enough to protect her. But it was a trap. A trap for Dad."

Mr Gold frowned. "Where is he now?"

The Professor shrugged. "I don't know."

"Come. Let's get her inside," Mr Gold said, standing up and unlocking the door to his shop.

The Professor picked Clara up and carried her inside, placing her on the main counter of the pawn shop. "Do you know something that could help her?"

Mr Gold looked over at Clara, studying her carefully. "Yes. I think the same spell that helped me will do the trick." He turned to the back wall and picked up an old book, opening to the right page. He gave it to the Professor. "I needed something that touched me when I was still a man. Before I became the Dark One. But with Ms Oswald, we need something that makes her Clara."

The Professor silently thought for a moment. "The leaf," he said aloud. "The most important leaf in human history."

Mr Gold smiled and nodded. "Now you're getting it," he said, just as the door to the pawn shop slammed open, and Emma entered, marching right for them. He looked over at her. "Miss Swan, you realise this isn't the library or Granny's or some bus station. This is my shop. And unless the sign says 'open', you're not invited."

The Professor tilted his head as he looked over at Emma. "You're not the Dark One anymore?" he questioned.

Emma looked over at the Professor. "No. I'm not. But I think I'm still connected to the Darkness. I hear whispering. It led me here to the dagger. It's calling to me."

Mr Gold shrugged. "She's just upset," he explained to the Professor. "In order to defeat the Darkness, a sacrifice was needed. And I'm afraid it's caused her to imagine things."

"No. I'm not," Emma said. "The dagger is here, isn't it? You have the dagger, don't you?"

Mr Gold was silent before looking at Emma and then the Professor. Then, finally, he sighed and reached underneath the counter to pull out a skinny brown box. "Yes, I do," he said, opening it to reveal the Dark One Dagger. But instead of black lettering engraved on silver metal, it was now silver lettering engraved on black. "How I'd hope to keep that secret. Wasn't expecting you to hear it, Miss Swan, but then, most ex-Dark Ones are dead."

"How?" the Professor asked.

"While you were away with Clara and your father, Miss Swan came to me asking for Excalibur, and I saw an opportunity. A chance I'd never imagined would present itself again. As fate would have it, a small vial of magic was close at hand. One sprinkle, and I knew I could get it all back.

"I turned the sword into a conduit. So that while Hook thought he was destroying the Darkness, he was actually moving it, channelling it someplace safe."

"Into you," Emma said.

"He had no idea," Mr Gold added. "And now, things are as they should be."

"Hook sacrificed himself, and you took that from him," Emma exclaimed, raising a hand to through some magic, but Mr Gold was faster and used his hand to cancel out her magic.

"Careful," the Professor said. "Not here."

"Nothing will happen here. She's powerless when she's around me. I now have the combined power of every Dark One who ever lived. Including here," Mr Gold explained when, suddenly, the shop shook around them.

"What did you do?" Emma asked.

"That wasn't me," Mr Gold said as a bright light came from the side door to his shop.

They looked at it, seeing the figure in the middle of the light, beckoning to them—the Doctor.

"What the hell?" Emma asked.

"Allow me," Mr Gold said as he approached the light. "Professor, you perform that spell on Clara."

"No. I need you to do something for me," Emma said. "You owe me."

"Perhaps I do," Mr Gold replied. "But that will have to wait until I get back." He looked at the light again and walked into it.