The Denver Post's Helen Verba Lecture Series returns, featuring former Rocky Mountain News reporter Jeff Kass to talk about his book, "Columbine: A True Crime Story." The book gives an in-depth look at the shooting and its aftermath.

Nearly 11 years after Eric Harris and Dylan Klebold killed 12 classmates and a teacher, Columbine remains the world's most iconic school shooting. This is the first book of investigative journalism to tell the complete story of that day, the far-reaching consequences, and the common denominators among school shooters across the country.

Kass was one of the first reporters on scene and wrote the Page One, next-day story for the Boston Globe. For 10 years, he covered Columbine as a staff writer for the Rocky Mountain News. He has broken national stories on the shootings, such as leaked crime scene photos, and the sealed diversion files of the killers. He has also reported the story extensively for the Boston Globe, Christian Science Monitor, Newsday, and U.S. News & World Report.

This event is free and open to the public, presented by the Colorado Chapter of the Society of Professional Journalists, The Denver Post and the Denver Press Club.