Erin Moriarty

I just wanted to learn more.

Detective Safford believes the answer to who killed Molly may just lie within these 80 boxes.

This one.

I found Molly's high school yearbook, and I went through that.

You know, I have a few tips that I was trying to track down.

It's part of her strategy.

These are all tips.

To organize and look at past tips with fresh eyes.

Who else might have heard or seen something that they didn't realize was significant?

I believe that that one more piece is out there.

I just have to keep digging.

And Detective Safford faces an overwhelming task.

She says there has been almost 8,000 tips that have come in since Molly went missing, and they keep coming.

I can honestly say that since I've been in this office, I don't think a week has gone by where we haven't received a Molly Bish tip, if not multiple, throughout the weeks.

Detective Safford says she's also studying the many pieces of evidence involved in Molly's case.

She allowed 48 hours to accompany her to the Massachusetts State Police Crime Lab's DNA cold storage facility in Sudbury, Massachusetts.

Boy, it's shivery in here.

Sherry Mittelhauser is a forensic support section manager at the crime lab.

And what am I looking at right in front of me?

So this is a bay full of evidence.