This is Where it Ends | Anniversary Edition

10:00am: 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.

10:02am: The students get up to leave the auditorium for their next class.

10:03am: The auditorium doors won't open.

10:05am: Someone starts shooting.

Told over the span of 54 harrowing minutes, terror reigns as one student's calculated revenge turns into the ultimate game of survival.

This is Where it Ends | Anniversary Edition features printed edges, updated author's note, and exclusive material.