In 2000, 23-year-old Leah Roberts packed up her Jeep and set out on what seemed to be a spontaneous road trip across the American Northwest. Searching for meaning after loss, Leah told no one exactly where she was going - or why. Nine days later, her SUV was discovered wrecked and abandoned deep in the forests near Bellingham, Washington, sparking one of the most perplexing missing-person investigations of the decade.