Jump to navigation

Looking ahead: School Shooters .info 4.0

School Shooters .info
About Library Prevention Basic Search Database



Investigative Report: Arapahoe High School [40 pp, 1.5 Mb]

This document provides a detailed account of Pierson’s attack, the events leading up to it, and significant excerpts from his diary.

Related to Incident: 
Arapahoe High School

Copyright © 2008–2025 by Peter Langman, Ph.D.

Published by Langman Psychological Associates, LLC.

Support The Site

Last update: 07 May 2025