A father's journey through grief, controversy, activism and healing following his son's death in the massacre at Columbine High School on April 20, 1999. The book describes the experiences of Tom Mauser, who became a nationally recognized gun control advocate who often spoke to crowds wearing the shoes worn by his son, Daniel, on the day of the massacre. Mauser describes the day of the massacre as well as the days, weeks and years afterwards. The book describes his struggles, his healing process, being arrested at NRA headquarters, spiritual experiences, adoption of a daughter from China, and dealing with the forgiveness issue, which included meetings with the parents of the two killers.