(lively music) <v ->"Almost done with this," Jake said,</v> carefully blending the colors on his palette. "Just one more shade. " "Better not take too long," Zara's voice called from down the hall. "Library closes soon. " Jake smiled to himself. "Don't worry, I'll be out before you are. " Jake often stayed behind after school to finish his artwork in the quiet of the empty classroom. The golden evening light slanted through the blinds, striping the floor in warm, dusty bands. The school was quiet now, (suspenseful music) almost too quiet. (dramatic music) As Jake finally left the classroom, the corridor was dark and the only sound was the faint hum of the drinks machine in the hall. He walked towards the library, then stopped. Bang, a locker slammed shut behind him. He spun around. Silence. "Zara? " he called, his voice echoing down the empty corridor. No answer. (suspenseful music) A cold breeze curled around his ankles as if something had opened behind him. He bolted forward, convincing himself it was only the wind through one of the open classroom windows. He stepped into the library, scanning the dim rows of books. In the corner a figure stood. "Zara? " he called. It turned and moved forward. (dramatic music) Not Zara. He staggered back, gasping. "Wait, who are you? No! " (dramatic music)