Examines the realities of brain injuries sustained on the field by football players and the National Football League's attempts to cover the issue up.

Originally broadcast on October 8, 2013 as an episode of the television program Frontline. Based on the book: League of denial : the NFL, concussions and the battle for truth / Mark Fainaru-Wada and Steve Fainaru. New York : Crown Archetype, 2013.

Intro -- "Iron Mike" Webster -- Mike Webster's last battle -- "Here come the hits..." -- Downplaying the risk -- A scientific first -- Goodell takes charge -- Precious cargo -- "A very serious state of denial" -- Congress enters the game -- A game changer -- Damage control -- Credits.