It has been over 16 years since teenagers Eric Harris and Dylan Klebold killed 12 students and a teacher at Columbine High School. Since then, the world has never been the same. This is especially true for Dylan’s mother, Sue Klebold, who penned her post-Columbine reflections in a new memoir, A Mother's Reckoning: Living in the Aftermath of Tragedy. In the book, Klebold tries to piece together clues from the past, in order to make sense of the bloodshed and examine whether she, as a mother, had failed her son. As school shootings continue to plague the United States, Klebold’s observations are needed as much now as ever. Profits from the book will go toward organizations that address mental health issues. Learn more here.