In March 2000, 23-year-old Leah Roberts left a note for her roommate and took off on a solo cross-country trip. Nine days later, her wrecked Jeep was found by hikers at the bottom of a ravine in upstate Washington and Leah was not inside. What initially looked like a car crash started to feel more sinister as the investigation continued. More than 25 years later the questions surrounding what happened only grow darker.