Dave Cullen talked about his book Columbine (Twelve; April 6, 2009). In his book, on the 10th anniversary of the mass murders, he presents a comprehensive account of the shootings on Tuesday, April 20, 1999, at Columbine High School in Columbine near Littleton, Colorado. He talked about the psychology of the shooters, how they evolved into killers, and the stories of the victims and survivors. Other topics included the media coverage of the event and his process of writing the book. Dave Cullen, the recipient of several journalism awards, is a graduate of the University of Colorado at Boulder. He has written extensively about the shootings at Columbine. Book TV interviewed Dave Cullen on April 26, 2009, while at the Los Angles Times Festival of Books.