The brilliant young forensic pathologist had no idea that the body on the slab in front of him would change his life, and ultimately change the world.

The body belonged to legendary American Footballer Mike Webster, whose mental health had rapidly declined - he had ended up treating his back pain with a Taser and using Superglue to fix his rotting teeth.

Dr Bennet Omalu found that Webster's psychosis was no accident. His autopsy unearthed evidence of a trauma-related disease - the consequence of years of head clashes in games. He knew it would kill scores of other sportsmen unless something was done, and believed the NFL would welcome the discovery. Instead America's most powerful corporation tried to destroy him.

Taut and gorgeously told, this is the intensely personal story of one man's fight against a multibillion dollar colossus. A man who stood up for what was right, whatever the cost.