This is a CBC podcast.

If you sold somebody a loaded gun who you knew was in a vulnerable state and they shot themselves.

I think it is murder.

He murdered my son.

In my opinion, he's one of the worst mass murderers we've ever seen.

The fact that he wasn't present in the room when these people died is to me entirely irrelevant.

This is a story about a deadly corner of the internet.

It seemed to completely throw police forces throughout the world.

Just because you're using the internet doesn't mean you get away with murder.

It's about the places people end up when they can't find the help they need in the real world.

These people have gone to a site where they couldn't converse with other people in their

life.

What people live post on this site is their own suicides.

And then you can root people on.

I thought, no, he couldn't have been on something like this.

And the more and more I looked on there, I found him.

What they found there was a substance so obscure it was almost unheard of,

and so deadly it's now linked to hundreds of deaths around the world.

I went in to his bank account and I can see it.

I was like, holy shit.

He bought this stuff.

There was a labeled packet next to Tom, but the police weren't interested.

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