“Mr. Kass, whose tough account is made even sadder by the demise of The Rocky Mountain News in which his Columbine coverage appeared, has also delivered an intensive Columbine overview. Some of the issues he raises and information he digs up go unnoticed by Mr. Cullen.” –Janet Maslin, New York Times

“A decade after the most dramatic school massacre in American history, Jeff Kass applies his considerable reporting talents to exploring the mystery of how two teens could have planned and carried out such gruesome acts without their own family and best friends knowing about it. Actually, there were important clues, but they were missed or downgraded both by those who knew the boys best and by public officials who came in contact with them. An engrossing and cautionary tale for everyone who cares about how to prevent kids from going bad.” —–Ted Gest, President, Criminal Justice Journalists