In May of 1975, a high school in Brampton, Ontario became the scene of Canada's first modern mass school shooting.

Sixteen-year-old Michael Slobodian walked into Brampton Centennial Secondary School carrying two rifles in a guitar case and, within minutes, left two people dead, thirteen wounded, and an entire generation traumatized.

In this episode of the Canadian Gothic we trace the events leading up to the attack, the moments of terror inside the school, and the survivor stories that have echoed through the decades.

This is the forgotten Canadian tragedy that unfolded long before Columbine, a chilling reminder that the roots of modern day school gun violence reach further back, and closer to home, than most realize.