Quad: every action triggers a reaction

Everything led up to this moment--the point when the teasing, the cruelty, the pressure all became too much. And someone finally snapped. Now six students are trapped in the campus store while someone terrorizes their school. The shooter's identity is teased out through the students' flashbacks until the final page. It's only there that we discover the shocking answer to the question: Who is shooting up the quad? This gripping thriller examines in excruciating detail how even the most casual cruelties can tear people apart.