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 Brainer 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 Heuerman 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.

The most common sexual motive for serial killings is sexual sadism. Becoming the god to that

victim is the offender's primal goal. The architect's neighbors on First Avenue in

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