The Doctor had never had that much fun. But of course, these things must end. As The Doctor and Jackson approached the TARDIS, Doctor held a grim expression.
"Doctor?" Jackson inquired.
"Just thinking of what's to come."
"Ah." Jackson contemplated. "But why?"
"Why?"
"Why aren't you traveling with companions anymore?"
"Well..." Doctor paused, trying to find a simple way to explain. "Accidents now happen too often for them to be safe with me." he said finally.
"Ah." Jackson reasoned. The duo had come to the TARDIS. As The Doctor stepped inside, Jackson said:
"Farewell 'Mr. Smith.'"
The Doctor smiled as he closed the door.
VERRRRRRRRRRRM VERRRRRRRRRRRRRM VERRRRRRRRRRRRRRRRRRRM!