2 Years Later, 'Tracker’s Biggest Series Mystery Still Hits Like a Punch to the Gut

From the moment Tracker premiered, Colter Shaw’s (Justin Hartley) biggest unsolved case was his father. For years, Colter lived with questions that fractured his family, poisoned his relationship with his brother Russell (Jensen Ackles), and left him wondering whether the man who raised him had simply lost his grip on reality.