on Gilgo Beach where a serial killer investigation was launched more than a dozen years ago.

Four dead women who came to be known as the Gilgo Four were discovered here in the brush off Ocean Parkway in December 2010.

Now police say they finally found the murderer.

He was living a double life.

He had a wife. He had two kids.

Nice job as an architect.

And Rex Heuerman, 59, probably never expected to be surrounded by cops in Midtown

as he left work on a Thursday evening.

Rex, did you do it?

Still wearing the same khakis, the towering suspect was accused of being the Gilgo Beach

Long Island serial killer known as LISC, who alluded law enforcement for more than a dozen years.

You were aware that he was patronizing other sex workers?

It certainly appeared as though he was, yes.

While investigators in white Tyvec suits immediately descended on Hewerman's lifelong home in

Massapequa Park, armed with search warrants, the suspect was initially charged with murdering

three of the Gilgo four.

Megan Waterman, Melissa Bartholomey, and Amber Costello, all petite online escorts who were discovered dead in 2010 with another escort, Maureen Raynard Barnes, in the brush off Ocean Parkway.

The only thing I can tell you that he did say as he was in tears was, I didn't do this.

Three of the sex workers were bound in burlap and Hewerman was named the prime suspect

in the murder of the fourth, Rainer Barnes.

Forensic psychiatrist Dr. Park Dees consulted on the case of serial killer Joel Rifkin,

another Long Island resident, and spoke to us about Hewerman's arrest.

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