The 2015 shooting in San Bernardino, California brings out a massive response from law enforcement. A shocked community responds to homegrown terrorism.
The city of Charleston, South Carolina is ripped apart by a shooting at a historic church. In the aftermath, the community is divided by the idea of forgiveness.
A shooter's violent path through Santa Monica, California leads to a deadly confrontation on a college campus. An examination of the shooter's mental health.
An exploration of the 1999 attack at a high school in Littleton, Colorado and the myths that may have inspired the active shooter phenomenon. Documentary series finale.