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 listener's note, the following episode contains course language, adult themes, and content of a violent and disturbing nature, and may not be suitable for everyone.

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On a cold snowy evening in the fall of 2012, sirens could be heard from one end of Calgary to another.

And what are you seeing coming out?

Be hanging and shelf off the bridge with the roof.

Are you safe right now, Mom?

Hello! Get here now!

Calgary, please put the address of the emergency.

I like that border better, please.

I'm Nancy Hicks, a senior crime reporter for Global News.

Today, on crime beat, a series of 911 calls lead police to multiple scenes and a disturbing discovery.

This is Justice for Lacey.

Just before 10 o'clock, on the night of October 25, 2012, two good Samaritans came upon a harrowing scene and called for help.

Calgary, please put the address of the emergency.

I was just trying to buy it and really just got trying to hang in shelf off the bridge.

She's trying to hang on, and I'll try to pull back up to the series trying to hang on.

Moments later, and even more disturbing discovery, just a few feet away from that bridge.

But before we get into the twisted turn of events that led investigators to this scene,

I need to introduce you to the young woman at the heart of today's story, Lacey Jones McKnight.

Here's her mother, Shelley Jones.

Lacey was an old soul from the moment she was born.

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