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

Crime Beat early and ad-free on Amazon Music included with Prime.

In the 1970s, two young girls were found dead in an underpass.

Seven months later, the body of a young woman was discovered in a ditch.

And just months after that, a fourth woman was found strangled to death.

Their cases went cold.

That's why we knew like something terrible was wrong.

Nobody could ever give us an answer how the girls died.

I'm Nancy Hicks, a senior crime reporter for Global News. On the season finale of Crime Beat,

I'll bring you a special three-part series. I share the haunting details of these cases

and introduce you to the detectives that used cutting edge techniques to break the cases

wide open nearly 50 years later.

DPS uploaded that profile to the genealogical databases and we performed what we would

call the traditional investigative genetic genealogy work.

We've identified a serial killer.

This man was the kind of the poster boy for a sexual predator.

For the first time in exclusive interviews, the killer's own family is speaking out.

I went from being married to a rapist. That's embarrassing enough.

To be married to a serial killer.

And could this serial killer be responsible for other unsolved murders?

I can't help but keep thinking, even to this day, how many do we not know about?

Uncovering a serial killer is available July 22nd.

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