"The mother of one of the two shooters at Columbine High School draws on personal recollections, journal entries and video recordings to piece together what led to her son's unpredicted breakdown and share insights into how other families might recognize warning signs,"--NoveList. On April 20, 1999, Eric Harris and Dylan Klebold walked into Columbine High School in Littleton, Colorado; they killed twelve students and a teacher and wounded twenty-four...