The couple was "attacked" while hiking in Devil’s Den State Park in Arkansas. A suspect was seen driving with tape on his license plate, authorities said.

The manhunt for a suspect has entered its third day after a couple was killed while hiking at Devil's Den State Park in Arkansas. Chris Swecker, former FBI assistant director, tells "Elizabeth Vargas" the remote nature of the crime's location makes it "perfect for predators" to commit such awful offenses.

A married couple was killed while hiking at Devil's Den State Park with their two daughters on Saturday.Clinton David Brink, 43, and Cristen Amanda Brink, 41, were killed on a walking trail. Their two daughters,