This Is Where It Ends By Marieke Nijkamp

Everyone has a reason to fear the boy with the gun…
10:00 a.m.: The principal of Opportunity, Alabama's high school finishes her speech, welcoming the entire student body to a new semester and encouraging them to excel and achieve.
10:02 a.m.: The students get up to leave the auditorium for their next class.
10:03: The auditorium doors won't open.
10:05: Someone starts shooting.
In 54 minutes, four students must confront their greatest hopes, and darkest fears, as they come face-to-face with the boy with the gun.