The TARDIS landed with a bit more of a "Thud!" than usual. Inside, Nine's voice rang out disapprovingly.

"I told you not to use that! It's a miracle you didn't blow us up!"

"I know what I'm doing!" Ten protested. "Besides, I'm older than you!" He sounded like he was pouting.

"Age-wise maybe, but not maturity! You remind me of a nine year old on a sugar rush!"

"I am not!" Now he was definitely pouting.

"Heaven help me when I regenerate…" Nine muttered.

"At least I'm not wearing a bowtie." Ten shot back.

"Oi!" Eleven broke in. "Bowties are cool!"

"No they're not!" Both Nine and Ten chorused. Eleven just sniffed. But their argument was interrupted by a pounding on the TARDIS door.

"Doctor?" a voice called from the outside. Ten bounded to his feet and ran to the door. He threw it open and stuck his head out.

"Ianto, wasn't it?" He asked as the two people standing there took back a step back. Ianto nodded. "And… Gwen. Right?" Gwen also nodded.

"Doctor, Jack's missing." Gwen said. Eleven opened the door.

"Told you it would work!" He cried. Ianto and Gwen looked at him in confusion. They hadn't met this regeneration yet.

"Who are you?" Ianto asked.

"I'm The Doctor."

"But… he's The Doctor." Ianto protested. "You can't both be The Doctor."

"He's a future regeneration." Ten explained. But all he got was blank looks.

"Time Lords have this trick, a way of cheating death." Nine said, appearing behind Ten and Eleven. "But every time it happens, I change. Every single cell."

"Who are you then?" Gwen asked, now really confused.

"I'm The Doctor too. From their past."

"Then how come there are three of you?" Ianto asked. "Isn't that … impossible?"

"Just a bit … unlikely." Ten said.

"We never cross our own personal timeline," Eleven said. "Except in extreme emergencies."

"Very dangerous this." Nine said. "Spoilers and all that."

"Anyways," Ianto got back to the heart of the matter. "What about Jack?"

"Right!" Ten said. "Did you happen to see him actually disappear?" Ianto and Gwen looked at each other then shook their heads.

"I was talking to him," Gwen said. "Then I turned my back for just one second, and when I turned back, he was gone. Vanished."

"None of the instruments caught it either." Ianto added. "He was there. Then he wasn't. Like nothing happened, he just didn't exist anymore." The Doctors nodded, thinking.

"Whatever's taken him must be incredibly powerful to simply pluck them out of Space and Time and not leave a single trace." Eleven said and Nine and Ten nodded.

"But why do they remember?" Ten asked, indicating Gwen and Ianto. "Even our previous regenerations have forgotten."

"Good question…" Eleven said, whipping out his sonic screwdriver and scanning them. "What's different about them?"

"The ripples probably haven't caught up to them fully yet. Same reason we remember. Give it time and they'll forget. Likes Jack never existed."

"But Doctor," Gwen said. "Jack's not the only one. Donna's gone too."

"And Sarah-Jane." Ianto added. The three Doctors looked at each other. This was definitely not good.

"They just vanished." Gwen said. "Without a trace."

"Just like Jack…" Ten muttered.

"Who?" Ianto asked and all eyes were instantly on him.

"They're starting to forget." Eleven said, scanning the Ianto again with the screwdriver.

"We'd better go." Ten said. "Maybe the Nobles saw something or Sarah-Jane's kids…" Eleven nodded but Nine looked confused.

"Sarah-Jane? We haven't seen her since our fifth regeneration." Eleven and Ten looked at each other.

"Spoilers." Was all Eleven said, and then they turned back into the TARDIS, ignoring Nine's eye roll and muttering to himself. He was wandering if it would be homicide or suicide if killed a future regeneration of himself as he shut the door.