Lee Caplin / Picture Entertainment

In 1964, a brash, new pro boxer, fresh from his Olympic gold medal victory, explodes onto the scene: Cassius Clay. Bold and outspoken, he cuts an entirely new image for African Americans in sport with his proud public self-confidence and his unapologetic belief that he is the greatest boxer of all time. Yet at the top of his game, both Ali's personal and professional lives face the ultimate test.

Strife and disaster befall a poor Mississippi family during a two-day trip by horse and wagon to bury their deceased matriarch.

In 2012, Louisiana State Police Detectives Rust Cohle and Martin Hart are brought in to revisit a homicide case they worked in 1995. As the inquiry unfolds in present day through separate interrogations, the two former detectives narrate the story of their investigation, reopening unhealed wounds, and drawing into question their supposed solving of a bizarre ritualistic murder in 1995. The timelines braid and converge in 2012 as each man is pulled back into a world they believed they'd left behind. In learning about each other and their killer, it becomes clear that darkness lives on both sides of the law.