The Rocky Mountains are brilliant in daylight, but nightfall sometimes reveals a dark and sinister side. Ride along with officers in Grand, Eagle and Boulder counties as they face everything from domestic disputes to knife threats.

Officers in Boulder and Grand counties in Colorado handle the unique challenges of enforcing the law in the Rockies. They protect the mountains and ensure that one of the nation's greatest natural treasures remains pristine and well protected.

When officers in Grand County, Colorado learn a local resident is wanted on a serious charge in Illinois, a manhunt begins. The wilderness presents the fugitive with many places to hide with difficult challenges to hunt the man down.

Rocky Mountain officers stake out the Interstate 70 corridor for drug runners moving through Colorado. Officers have their hands full not only trying to spot suspicious vehicles but finding where the drugs may be hidden.

Shootings are rare in the small town of Minturn, Colorado, and officers are puzzled when an individual on suicide watch turns up with a gunshot wound in the chest.

When an inmate escapes from jail, Boulder, Colorado Sheriff's Deputies conduct an exhaustive manhunt to find the dangerous fugitive hidden somewhere in the hundreds of square miles of Boulder's Rocky Mountains.

A Rocky Mountain mystery evolves when deputies find the skeletal remains of a man near the summit of a mountain in Eagle County. Detectives, coroners and forensic pathologists work to determine who he is, how he died and why.

In a rural mountain region of Eagle County, Colorado, a resident shoots and kills a man he believes to be a masked, armed intruder, only to learn the victim is a friend.