Erin Moriarty

So is the thought that if somebody brought their car down there, they could maybe grab her, pull her back up, get in the car before?

In fact, in the early days of the investigation, search dogs did follow Molly's scent from the pond leading up to the cemetery.

But there were still so many unanswered questions, like why was the first aid kit left open?

Kathy Curran believes that Molly's abductor may have pretended to be injured.

Then in May of 2004, four years after Molly disappeared, DA John Conte called for a grand jury to be convened.

Heather, along with her family, were called to testify.

They say that many of the DA's questions seem to be focused on Molly's friends.

I remember we were all kind of like mad because we didn't feel like they were really significant.

But detectives had learned that some of Molly's friends had gathered at her boyfriend Steven Lucas' house the morning of Molly's disappearance.

We have a timeline.

And they were telling police conflicting stories about what happened in the hours before and after Molly went missing.

The grand jury transcripts are sealed, so it is not known whom the investigators actually questioned.

But they would later clear Steven Lucas as a person of interest.

After two long years in December of 2006, the grand jury was dismissed without an indictment.

Just weeks after the grand jury was dismissed, John Conte retired, and Joe Early Jr.

took over as Worcester District Attorney.

He says the grand jury was used as an investigative tool to preserve witnesses' testimony.

But Heather says not having answers as to who murdered her sister was taking its toll.

I was giving up hope in a lot of areas.

And things only got worse.