Journalist George Lardner, Jr. is an investigative reporter for The Washington Post. In 1993 he had to investigate the murder of his own daughter, who was stalked and killed by an ex-boyfriend. Lardner won a Pulitzer Prize for his story which showed how the system had failed to protect his daughter, Kristin. His new book is The Stalking of Kristin: A Father Investigates the Murder of his Daughter. (Atlantic Monthly Press). (Interview by Marty Moss-Coane)