Map: Amber Lynn Costello's house

Costello's remains were found near Gilgo Beach

In December 2010, Costello's remains were found inside the thicket at this section of Ocean Parkway.

By that stage, she had been missing for three months.

The killer had bound her with three pieces of white or clear duct tape and wrapped her in duck-blind camouflage burlap.

One of these pieces of tape contained a single female hair, which matched the same mitochondrial haplogroup as Heuermann's wife, Asa Ellerup.

The authorities believe that the tape may have picked up the hair from inside Heuermann's residence, as cell phone data showed that Ellerup was in New Jersey at the time of the murder.

Costello was not reported missing because her sister, Kimberly Overstreet, presumed that she was "off getting high" somewhere. Overstreet had formerly worked in the industry herself. Consequently, she was aware that the police were reluctant to file missing person reports about sex workers.

Sadly, she was correct.

Relatives of some of the other victims would later recall how they received pushback when they attempted to report their loved ones missing, as sex workers are usually transient in nature.

It wasn't until all of their remains turned up in the same spot on Gilgo Beach that the authorities realized they had a problem on their hands.