Zero Hour: Massacre at Columbine High

"Zero Hour: Massacre at Columbine High on 123fmovies.biz" – This movie covers the final hour leading up to the Columbine High Massacre. On April 20, 1999, two boys from Columbine High School in Colorado embarked on a massacre and killed 12 students, one teacher, and injured 21 other students, before turning the guns on themselves.