"Hello, I'm John Smith, health and safety" said the Doctor, flashing his sheet of psychic paper in front of the receptionist. "Nothing to worry about, just a routine check of how everything's holding up here. Can't be too careful eh?" The women looked at the paper, then eyed the Doctor quizzically.
"It was my understanding" she said "that we were inspected by DCFS two days ago." The Doctor's stood taken aback for a moment, his boyish grin frozen on his face.
"Oh-I mean-yes, of course they did. Unfortunately" the Doctor's mind raced to come up with an adequate excuse, "the previous inspector forgot to fill out...page seven, paragraph 2-B...or was it 3-B? Either way it was a terribly important paragraph and I'm afraid his inspection is null and void without it."
The receptionist sighed. On the one hand, the stranger in front of her seemed a touch suspicious, but on the other hand he did have the credentials. She reached under the desk and handed him a visitor's pass.
"Please wear this at all times while on the campus" she said, "will you be needing an escort?"
"No, thanks" the Doctor said, putting the pass on. "I'll do fine on my own." And with that he quickly walked away. Once out of the receptionist's sight, he reached in his pocket and took out a small black box covered in dials and knobs. A small satellite dish whirled around at the top, beeping periodically.
He was about to take a step down the hall when a bell rang, and all the doors in the hallway suddenly sprang open. The Doctor instinctively reached for his sonic screwdriver and took a step back, but there was no need for alarm. Children came flooding out of the rooms, talking excitedly as teachers led them along, shouting instructions over the din of babble.
"Hey mister" said a small Hispanic boy in a blue hoodie, "what's that?" He was pointing at the black box in the Doctor's hand.
"Oh, this?" he replied "it's my...er...timey-whimey detector. It goes ding when there's stuff." The child was about to speak again, but was engulfed by the sea of students and disappeared.
After the students had cleared, the Doctor looked back down at his device. This place seemed like a normal enough elementary school, so why were there vortex particles here? Usually those kinds of particles were only found on time travelers such as himself, so he couldn't fathom what could be going on in this instance. The dish was now spinning much more slowly, indicating that the particles were now farther away. Were they on one of this children? He walked quickly after the throng of kids, and the dish slowly began to pick up speed.
Suddenly, the Doctor stopped and stared out the window. After a moment he shook his head. He had to be imagining things, because for a moment he thought he saw a pair of eye's on one of the school buses staring back at him.