Author's note. This fic/scene is based on rumours I have read concerning the next episode. And believe me if I am anywhere near close I will be unbelievably smug!
Warning may, just may contain spoiler for Journey's end.
Regeneration
Jack held on tightly to Rose and Donna. Whatever happened next, they couldn't interfere.
"Good Luck Doctor!" Jack called.
The Doctor had stood up. Temporal energy poured into him. He could feel the change beginning. Bones were contracting and lengthening, muscles in his body repairing and re-arranging themselves. Red hot pain flowed through his body. Regeneration was intensely painful, it would take him a while to recover. But you don't have time this time. He told himself. The Tardis lurched suddenly. Somewhere in his golden haze he suddenly felt the force of the floor collide with him. Somewhere, it seemed a long way off, he could hear screams. There were words in the screams but he couldn't catch them. He could still feel the change, but something was wrong. He had touched something when he had fallen, the energy needed for the regeneration that he had felt 9 times before felt…different. Pain explode into every fibre of his being, the energy was flowing away from him. It was going wrong. Badly wrong.
"GET OUT!" He managed to scream. Fear gripped him. What was happening? The console room seemed to be swimming in and out of focus. Just when the Doctor felt he couldn't take anymore, everything went black.
Jack had seized Donna and the protesting Rose and pushed them through the nearest door. He had flattened himself against it in an effort to keep them from going back in.
"Jack he needs our help!" Rose screamed.
" It is a regeneration Rose! There is nothing we can do!"
"It's gone quiet in there." Donna said. Jack looked at her briefly and then opened the door. The room appeared to be empty. The console was still there of course, but at first glance there appeared to be no-one else. Rose gave a delighted squeal. They turned in her direction. Rose was looking at the Doctor who was pushing himself up. His hands were visible first, as he clawed his way up to a standing position using the console. When his head appeared Rose gave another delighted sound. It was the Doctor! Her Doctor! He had kept the same body somehow. He was looking at himself in a puzzled way. Reaching into his pockets, he hurriedly pulled out the stethoscope, and placed it on his chest. Yup, 2 hearts, both beating. Well that was something anyway. He turned to look at Rose and their eyes met and he smiled. The smile faded rapidly when he saw Jack and Donna, who were staring at something on the other side of the console. Both the Doctor and Rose turned their heads. Stunned silence followed.
"How is that?" Donna said pointing. Her mouth open in affronted puzzlement. Jack looked stunned, so did Rose.
"How did you do that?!" Donna demanded slightly more vocally.
"I..well..I.." The Doctor stammered.
"Well, for once I'm speechless." Said the voice, from the other side of the console. Rose gapped. The voice had come from a man and the man was the exact duplicate of the Doctor, except this one was wearing the blue suit. Rose turned from one to the other. Jack glanced to the floor.
"Hey Doctor?" Jack called,
"Yes?" they both replied at once, then turned to glare at each other.
"The jar with your hand in it. The Jar smashed and the hand's gone!"
"Oh of course!" The brown suited Doctor slapped his head in realisation.
Insert scientific babble here. As I will not write it, you have to use your imagination!! Please r and r.