World Ocean Day is upon us, but can we really talk about two-thirds of the Earth's surface in just one day?

Absolutely not.

I'm Ian Urbina back with an all-new season of the Outlaw Ocean.

My podcast delves into the impossibly vast and shockingly lawless world of the open seas.

Find and follow an all-new season of the Outlaw Ocean wherever you get your podcasts.

This is a CBC podcast.

What does a young female reporter do when they receive a cold call from one of the most horrific serial killers in Canadian history?

The killer, Clifford Olson, who murdered 11 children in the 1980s, maybe more. And the reporter?

Well, that's me. Hi, I'm Arlene Bynon. I'm a journalist and radio broadcaster. And I'm the host of calls from a killer, a brand new season of CBC's Uncover. Clifford Olson began calling me

over three decades ago. I recorded my jailhouse calls with him for years. When he was locked away,

there was no doubt authorities thought the story was over, but it wasn't.

Alongside legendary journalist Peter Worthington, I spent hundreds of hours on the phone

with Olson. It was kept secret from his prison guards, since he wasn't allowed to speak to the

media. In calls from a killer, I revisit those tapes and unearthed secrets that have been buried for decades.

With Nathaniel Frum, Peter's grandson, I expose hard truths about a forgotten tragedy, a bungled

investigation, and the mind of a psychopath.

Now here's the first episode of Calls from a Killer, from CBC's Uncover. Have a listen.

The following episode contains strong language and descriptions of violence.

Please take care when listening.

Whenever I stayed at my grandparents' house as a kid, there was a rule.

Always pick up the phone. Because you never knew who could be calling for my grandpa Pete. A Soviet spy, a cabinet minister, a serial killer.

Growing up, I'd learn what my grandpa did for a living through the stories he'd share at the holidays or summers at the lake.

...