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This is Deborah Roberts co-anchor of 2020. This week we'll be bringing you a deep dive into the Gilgo Beach murders from Impact by Nightline.

The number of alleged victims has grown.

Prosecutors now have charged a Manhattan architect with the deaths of seven women.

Here's an inside look at the alleged double life of the accused killer.

A Manhattan professional by day and a serial killer by night?

Rex Sherman is a demon that walks among us.

Was he leading a horrific double life?

It's like two different people. like Jekyll and Hype.

Authorities now charging him with a seventh killing.

The shocking evidence in court filings that law enforcement says are detailed plans to hunt and kill.

He's talking about preferences, ways to improve.

He's saying things like, use a thicker rope, so it doesn't break under pressure, hit harder next time.

The random 911 call that prompted intensive searches.

And meet the woman who believes she escaped the go-go killer.

I remember everything about that night because he scared the crap out of me.

The Gilgo Beach, a spot that had once been synonymous with summer, surfing, and fun in the sun.

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