'' Columbine '' is a non-fiction book written by Dave Cullen and published by Twelve ( Hachette Book Group ) on April 6 , 2009 . It is an examination of the Columbine High School massacre , on April 20 , 1999 , and the perpetrators Eric Harris and Dylan Klebold . The book covers two major storylines : the killer 's evolution leading up to the attack , and the survivors ' struggles with the aftermath over the next decade . Chapters alternate between the two stories . Graphic depictions of parts of the attack are included , in addition to the actual names of friends and family ( the only exception being the pseudonym " Harriet " , which is used for a female Columbine student referred to in Klebold ’s journal entries , with whom he was obsessively in love )
Columbine High School massacre
Columbine High School massacre
Columbine (book)