Jack was the first to reach the Doctor. He knelt beside him and placed a hand on his chest. Jenny and Donna hovered anxiously. Donna was almost afraid to look too closely at his pale face.

"Doctor! Come on! This is no time to be sleeping on the job!" Jack reached into his pocket and pulled out the screwdriver. He tossed it to Donna.

"Here! Check and see where he's hurt!"

"What?" Donna held it out. "How do I do that?"

"You seen him do it often enough!"

"So have you! Oh, here then!"

Donna aimed the screwdriver at the Doctor's chest. Her hand shook violently.

"Maybe I should try," Jack and Jenny said at the same time.

"No! I remember! Wait...he did it to me...pressed this, and..."

"Donna, give it back and that's an order!"

But Donna had already pressed. She heard the familiar buzz from the screwdriver.

"I don't know what it means though, do I?"

"Ow! For the love of...what are you doing? Turn it off!" the Doctor's voice protested weakly.

"Thank God!" Jack grinned at him. "How are you doing?"

"Right now...probably better than you, Jack."

Without comment, Jack held out an hand. Taking it, the Doctor smiled at Donna and Jenny.

"Well done! Looks like you've dispatched our little friend. I thought she was trying to make a run for it, clobbering me like that! Did she put up a fight?"

"No," Donna said, "but...I'm sorry, Doctor, Moira went with her. We couldn't stop her."

The Doctor sat up and got shakily to his feet. He took the screwdriver from Donna and scanned the spot from which they had vanished.

"Donna?"

Donna spun around to see her grandfather in a sitting position. Around him, the others were stirring too.

"Moira's gone? Is that what you said?" Keira struggled to her feet, leaning on John.

"You've got to get her back!" John shouted.

Donna walked over and knelt beside Wilf.

"Are you ok?"

He nodded, giving her a small smile.

"As long as you are, sweetheart."

"Jack?" Martha was on her feet, staring at Jack as if he was an apparition. Beside her Ianto was helping Mickey and Gwen to their feet.

"Go and talk to them," the Doctor said quietly, "the memory manipulation will be weakening."

"Yeah." Jack looked suddenly distracted. He patted his coat, as if checking for something. From where she sat, Donna could see that his face looked very pale once again. Jack's a mystery these days, the Doctor had said.

"Yes?" the Doctor asked, watching him.

Jack reached into his pocket and pulled out what looked like a glass vial. He stared at it for a moment and then held it out.

"It's double sealed," was all he said.

"Thank you," the Doctor said quietly, pocketing it. Donna waited, wondering when might be a good time to start asking questions. They stared at each other for a few seconds, then Jack turned back to his team.

"What happened?" Gwen asked, looking dazed.

"I think we may have some explaining to do, sir," Ianto said.

"Yeah." Jack rubbed his head, as if wondering where to start.

"How'd you manage not to forget me?" he asked.

"I don't know," Ianto said thoughtfully, "I mean, it's not like you're all that unforgettable."

Jack laughed and put an arm around Martha.

"Come on," he said to his team, "we need to go sort your heads out a bit."

Keira was trying to wrestle the screwdriver out of the Doctor's hand.

"You can get her back, I know you can, please! I know she did...we did...stupid things. She's not well. You saw that!"

The Doctor looked at them sadly.

"Keira, John, I'm very sorry. I really am. But there's no getting her back. Not now. They keep their home a secret, remember me telling you that? Glimstone was destroyed. The survivors will be well hidden in their new world. I could only set the co-ordinates to take that Feyad back to wherever her species were. It's better that we don't know, you see."

"But they've got Moira. They'll kill her."

"I don't think they will," he replied slowly. "Would I be right in saying, Keira, that what you saw when you looked at the Feyad just now, was someone you loved?"

Keira nodded slowly, her eyes bright.

"My boyfriend," she whispered, "I haven't been able to find him since we returned."

"Yet, on Glimstone, you saw no one relating to Earth at all, did you? The Feyads there took the form of protectors. They looked human but not familiar."

Keira nodded.

"And John? You said that Moira was the only one who learned how to do memory manipulation. Why?"

John looked at Keira. "They tried to teach us all...when we'd share memories. But Keira and I couldn't get the hang of it. Maybe we didn't want to. It was creepy...we hated how they could get into our heads but at first, we went along with it. We thought that was how they communicated and that it would rude not to go along with it. But Moira...she was really into it."

"She was," the Doctor said. "There was a fundamental difference between you all on Glimstone, wasn't there? You two...you were surviving as best you could. Moira found something there. Something she never had on Earth." He shrugged. "It happens. And they loved her."

"What? They didn't love anything...they manipulated us! You said..."

"Why did they let you get away? You escaped from Glimstone with one of their machines, remember? The Feyads are a powerful race. They could've stopped you going at any time. But they let you go. They let you go because their planet was doomed and there was no other way they could save you...or more specifically, save Moira."

"What?"

But John was staring at the Doctor.

"Is that why Moira wanted to come here? To find a way back? But she'd have said..."

"She wanted to be connected with that world in any way she could," Donna said hesitantly, pulling the words out of her own memory.

"Maybe she wanted to test the machine again and where better than Torchwood?" the Doctor said. "You were all traumatised by what you'd been through and Moira was grieving. Grieving for what she'd found and loved. Questioning herself. Wondering if any of it was as real as she thought. On the other hand, she was scared and angry and looking for revenge against a world that had forgotten about you all."

"And there was a Feyad here all along," John said.

The Doctor nodded. "One Feyad who came back for her machine because she knew it would lead her to Moira. Remember what Moira said when she looked at it? She said I've never seen anything like it. Well, no one says that when they see a Feyad! You know exactly what, or who, you're looking it! That's their power! But in Moira's case, her deepest desire was right in front of her. I think she might be the first human ever to see a Feyad's natural form."

"But she's gone," Keira said shakily, "we won't be able to find her."

The Doctor shook his head. "I'm sorry. I really am very sorry."

Donna felt Jenny move nearer to her.

"Do you feel the air changing?" she whispered.

Donna nodded. "Yeah...I never realised it was so tight before. It seems easier to breathe now."

In the semi-darkness, Jenny's eyes looked very bright.

"I can understand why Moira did it," she whispered.

"What?"

"Sometimes the world you're born in isn't the world you're meant to live in."

"No." Donna squeezed her hand.

"Alright?" she whispered to her Granddad on her other side. He was watching them silently and for a moment there, she thought she'd seen tears in his eyes.