Karl Pierson’s alleged murder plan at Arapahoe High: “The die has been cast”
Update: Following Friday’s shooting at Arapahoe High School, Arapahoe County Sheriff Grayson Robinson hinted that what some initially interpreted as a limited attack by gunman Karl Pierson, with librarian/debate-team coach Tracy Murphy as the single target, was actually a broader plot for death and destruction. Now, Robinson’s office has unveiled…