Alan Prendergast Journalist and Author Alan Prendergast is a Denver journalist whose stories on the justice system have appeared in numerous local and national publications. His new book Gangbuster hit bookstores in March 2023. Alan Prendergast Written by Alan Prendergast Fighting the Invisible Empire Mar 17, 2023 How Philip Van Cise took on the KKK and helped end the Klan’s reign of terror in Denver.