detects draining spell

So I sat by Bigfoot Irwin and watched the shadows lengthen and swell into night.
The attack came just after nine o’clock.
Nurse Jen was taking Irwin’s temperature again when I felt the sudden surge of cold, somehow oily energy flood the room.
Irwin took a sudden, shallow breath, and his face became very pale. Nurse Jen frowned at the digital thermometer she had in his ear. It suddenly emitted a series of beeping, wailing noises, and she jerked it free of Irwin just as a bunch of sparks drizzled from its battery casing. She dropped it to the floor, where it lay trailing a thin wisp of smoke.
“What the hell?” Nurse Jen demanded.
I rose to my feet, looking around the room. “Use a mercury thermometer next time,” I said. I didn’t have much in the way of magical gear on me, but I wasn’t going to need any for this. I could feel the presence of the dark, dangerous magic radiating through the room like the heat from a nearby fire.
Nurse Jen had pressed a stethoscope against Irwin’s chest, listening for a moment, while I went to the opposite side of the bed and waved my hand through the air over the bed with my eyes closed, trying to orient the spell attacking Irwin’s aura, so that I could backtrack it to its source.
“What are you doing?” Nurse Jen demanded.
“Inexplicable stuff,” I said. “How is he?”
“Something isn’t right,” she said. “I don’t think he’s getting enough air. It’s like an asthma attack.” She put the stethoscope down, turned to a nearby closet, and ripped out a small oxygen tank. She immediately began hooking up a line to it, attached to one of those nose-and-mouth-covering things, opened the valve, and pressed the cup down over Irwin’s nose and mouth.
“Excuse me,” I said, squeezing past her in order to wave my hand through the air over that side of the bed. I got a fix on the direction of the spell and jabbed my forefinger in that direction. “What’s that way?”
She blinked and stared at me incredulously. “What?”
“That way,” I said, thrusting my finger in the indicated direction several times. “What is over that way?”
She frowned, shook her head a little, and said, “Uh, uh, the cafeteria and administration.”
“Administration, eh?” I said. “Not the dorms?”
“No. They’re the opposite way.”
“You got any lunch ladies that hate Irwin?”
Nurse Jen looked at me like I was a lunatic. “What the hell are you talking about? No, of course not!” I grunted. This attack clearly wasn’t the work of a vampire, and the destruction of the electronic thermometer indicated the presence of mortal magic. The kids were required to be back in their dorms at this time, so presumably it wasn’t one of them. And if it wasn’t someone in the cafeteria, then it had to be someone in the administration building.
Dr. Fabio had been way too interested in making sure I wasn’t around. If it was Fabio behind the attacks on Irwin, then I could probably expect some interference to be arriving—


Brief Cases, I was a Teenage Bigfoot Page 104-105