On November 17, 2004, a young Calgary family settled in for the evening. At about 9 pm, the husband left for work as a security guard, while his wife stayed home with their two children. In the middle of the night, she woke to the sound of shattered glass. Within minutes the entire home was engulfed in flames. After desperate attempts to reach her children failed, the mother managed to escape. The children didn't survive. Senior crime reporter Nancy Hixt shares the unexpected twists the investigation took into who was responsible for the devastating double-fatal fire.