My first thought was what a senseless act.

These were three individuals that were as innocent as children.

I've never met anyone that's killed three people, and I don't know what is the mindset to do such.

It's senseless, it's horrific.

I have no words for someone that would act in such a manner.

Nestled at the foot of the Blue Ridge Mountains in South Carolina is the city of Greer, a quiet little town that's the envy of outsiders.

In 2003, Greer was home to 56-year-old Sylvia Holtsklaugh, a teller at Blue Ridge Savings Bank,

located on a dead end road just off Interstate 85.

It's a small bank, and Sylvia often finds herself working alone there.

At 1.30 p.m. on Friday, May 16, dispatch at the Greer Police Department has notified that the bank's silent alarm has been tripped

and a possible robbery is in progress.

When police arrive 17 minutes later, they make a gruesome discovery.

This is far from a typical bank robbery, one that will hunt the town for years to come.

I'm Steve French, and this is Unissolved Mysteries, three dead at Blue Ridge Bank.

It's Thursday, May 15, 2003.

In 28-year-old David Holtsklaugh is on his way from Tallahassee, Florida to visit his mom in Greer, South Carolina.

They plan to celebrate Mother's Day a week late, because David had to work the previous weekend.

She was as close to me as I could ever imagine.

I lived seven hours away, and so she and I were talking a lot on the phone.

I would say we would talk every other day, and then sometimes we would talk three or four times a day.

She and I and my brother went through a lot together, and she gave up a lot for us so we could have things,

even at our own expense, to where she wouldn't have things so we would have them.

...