Testprep.zip (Browser ESSENTIAL)

The screen didn't show equations. Instead, his webcam light flickered to life, glowing a steady, sickly green. A window popped up with a simple prompt:

The next morning, Elias’s roommate found the laptop open on the desk. There was no one in the room. The Calculus exam sat on the screen, fully answered in perfect notation. Elias was gone, but the file was still there, waiting to be sent. It was already uploading itself to the class listserv. TestPrep.zip

The green webcam light turned red. On the screen, the static figure in the photo reached out of the frame. The screen didn't show equations

Suddenly, his laptop screen began to cycle through photos. They weren't stock images. They were photos of him—taken from the perspective of his own webcam—starting from an hour ago, moving backward. In each photo, there was a shadow behind his chair that hadn't been there in reality. With every click of the slideshow, the shadow leaned closer to his neck. There was no one in the room

The email came from an unlisted address at 3:14 AM, just as Elias’s vision was beginning to blur from twelve hours of cramming. The subject line was blank. The attachment was a 4.2MB file named TestPrep.zip .