Hey, it's Nancy. Before we begin today, I just wanted to let you know that you can listen to

Crime Beat early and add free on Amazon Music included with Prime. A young family living in a quiet southeast Calgary neighborhood was unwinding as the father left for a night shift at work.

Tassine Al-Mayahi was a security guard at a local car dealership, while his wife stayed

home with their two young children.

Selma Marie was taking adult education classes, so she spent some time on homework

while the kids played, and later tucked them in and headed to bed herself.

At about 1.30 in the morning she awoke to the sound of shattered glass and the air was thick with smoke.

Salma found her way to her son Ali's bedroom, woke him up and told him to go to her room.

Next, she went to her daughter Saj's room,

but the little girl wasn't there.

She had planned to throw the kids out of her window to escape the fire.

The panicked mother broke the window of her bedroom, thinking fresh air would help clear the smoke, but it only fueled the flames.

Salma went back to her room and called for her son.

For a moment she heard a cry.

Then, silence.

She said his name over and over, but he didn't answer.

The young mother yelled from the second story window screaming for someone to help her.

Then, unable to help her children, she made the almost impossible decision to jump to safety herself.

It's very, very difficult.

The apartments like very silent. There is like not like before no jumping on the surface.

No running.

I think it's very silent.

...