On a crisp fall day in October of 1991, Patricia Skoville set out for a bike ride on the scenic

Moss Glen Falls trails in Stowe, Vermont.

When she hadn't returned home more than two days later,

Patty's roommate reported her missing,

triggering a search and rescue effort that soon morphed into a homicide investigation.

The case that unfolded baffled investigators for almost two decades, but the person responsible

for Patricia's death could only hide for so long.

Thanks to efforts by Patty's parents, police got a new investigative tool that would lead

them right to the killer's doorstep.

I'm Kylie Lowe and this is the case of Patricia Skoville, Patty, to her friends and family, was just 28 years old in 1991, but after a few years of working in the

corporate world, she was ready for something different. She earned her degree in human ecology

and human

development from Cornell University in 1986 and moved to Boston after graduating.

First, landing in human resources at a bank and then a similar position at Reese

Corporation, a company that made sewing machines.

In 1991, Reese Corporation closed the doors

to its Massachusetts location,

and Patty took it as an opportunity to find her next adventure.

Somewhere she could spend time in nature and breathe fresh air and enjoy a slower pace of

life away from the pressures and hustle of the city.

To paraphrase the famous quote,

The mountains were calling, and Patty told her family and friends

...