Graham travels to North Carolina to the home of Dale Earnhardt Jr. for the NASCAR Hall of Famer's first extensive interview about the numerous concussions that forced his early retirement. In this 2018 interview, the NBC NASCAR analyst candidly shares why he kept concussion symptoms a secret for so long, what his late father meant to him and the positive impact therapy has had on his career and marriage. We also hear from Dale Jr.'s wife Amy, and sister Kelley, as they share intimate stories of the racing icon.