Tosh now enters the story ... and we find out a little more about what happened to Jack.

Tosh arrived about 10 minutes later. I was tidying up and keeping myself busy but staying round the work area. I looked into Jack's office occasionally and every time I did he was at his desk going through paperwork. I took a longer look and realised that he wasn't sitting in his chair, he was kneeling. That was the only way he could reach the trays without moving them.

"Ianto, you said something urgent had come up." Toshiko climbed the steps and hung up her coat. "What's happened?" She stood looking up at me, eyes wide and ready to tackle anything. I wanted to hug her.

"Yes. It's about Jack ..."

"He's shrunk," put in Owen having come up silently beside me. He giggled.

"Been working on that one, have you?" I asked innocently, eyebrow raised.

"Shrunk, what do you mean?" Automatically, her gaze had gone to the window into Jack's office and she saw him at his desk. She did a double take. "Who's that?" she pointed, her mouth open.

"That's Jack." Owen looked so pleased with himself; he loved it if other people were in trouble. He plonked himself down on the sofa ready to enjoy the show.

Toshiko looked at me, "Ianto?"

I sighed, "Why don't we go and see Jack and he can explain himself."

"This'll be good." Owen made to follow us.

"Not you," I said pointedly. "You need to get on with that autopsy." He shot me such a look but didn't follow us. I could feel his angry gaze drilling holes in my shoulder blades as Toshiko and I went to the office door. I knocked and opened it, just as I would normally. "Jack, Tosh is here. I thought you'd want to tell her exactly what happened."

"Yes, come on in." Jack waved us in imperiously. He swayed back in the chair, became aware he couldn't lean right back, and gracefully changed direction and leant on the desk. "Thanks for coming in early, Tosh. As you can see, I've changed somewhat." He smiled up at her.

He was putting on a great show. To anyone else, including the rest of the team, he was fully in charge, relaxed and confident. But I could see in his eyes and the way he held himself that he knew he was walking a tightrope and only just keeping his balance. One more setback and I imagined him exploding in rage at what had happened to him. For the second time in five minutes I wanted to hug Toshiko for what she did next.

She sat down in the chair (I'd moved the jacket and put it on top of the filing cabinet) and asked, "What exactly happened, Jack?" She was serious, concerned but not alarmed or amused. She was wonderful.

Jack warmed to her and smiled up at us both. He was with the two members of his team who most readily accepted his authority and that had not changed just because he had. "Let me show you the CCTV," he said. He jumped down from the chair and stood in front of the computer that he always kept on a stand behind him. He'd objected to having a PC on his desk, said he preferred a clean area to work on which is odd considering how little paperwork he does.

He pressed a few buttons and the CCTV footage began. It was the first time I'd seen it and I leant forward for a clear view; Toshiko also moved closer. The images were from the camera almost over Toshiko's desk and started at 2.46am with the slumbering Hub. A couple of minutes later, an adult Jack appeared from the hatch and I was pleased to see he'd put on his trousers and a T-shirt. He looked around him, walked out to the work area and stopped, looking round, just by Owen's desk. Then there was a flash of light that made us all flinch. When that had gone, one minute and four seconds later, the boy Jack was lying on the floor where the adult had been standing.

"I was unconscious for just over an hour," he told us, fast forwarding the tape. He started it again at 3.58 and we saw him regain consciousness. His face when he realised his size was a picture and I had to stifle a smile. His clothes were, obviously, way to big and only the T-shirt hid his modesty. He stopped the tape and the screen went blank. "I have no idea what that glare was, Tosh. I need you to analyse it, see if you can get something from it."

"I'll get straight onto it," she said. "What about you, Jack? Are you okay?" She put a hand on his shoulder and squeezed lightly.

"I'm fine, thanks. Owen's given me a clean bill of health. I'm just shorter than usual." He grinned and patted her hand. It was certainly strange to see him looking up at her.

"You have all your memories? No gaps or anything? That could be important when we try to identify whatever did this to you."

"None that I've found so far," he replied.

"Okay, I'll see what I can find. Oh, you said there was a noise that brought you up from your quarters. What kind of noise?"

He frowned, remembering. "A kind of humming but harsher, not a buzz though. Maybe metallic." She nodded and left the room. Jack looked after her admiringly. "She's good," he said to me getting back in his chair, kneeling again.

Next we will see Gwen's reaction ... Please keep reviewing.