In the last episode of the series, lavish imperial games at the Colosseum are highlighted by the emperor's bloody victories, but his paranoid abuses of power lead to a final betrayal.

Twenty years ago, at 9.03am on 11 September 2001, America was under attack. President George W Bush was sitting in front of seven-year-olds in a classroom in Florida. Members of the president’s security detail thought the next plane could be aimed at them. The film is a claustrophobic clock-ticking thriller and tells the story of the presidency on arguably the most consequential day in recent history. As the clock ticks, the administration makes the greatest decisions of their lives: should they order fighter jets to shoot on American civilians? Should the president declare war or calm a battered nation? How would the leadership of the most powerful nation on earth grapple with the national and international implications?
This documentary tells the definitive story of the Bush administration through 12 hours of that momentous day, with first-hand testimony from President Bush, Vice-President Dick Cheney, National Security Advisor Condoleezza Rice and other senior staff who had their hands on the levers of power. The events of that day led to two decades of conflict in Afghanistan and Iraq. As America and its allies now withdraw from Afghanistan and the Taliban resume control, this is the story of how it all began.

In less than two years, Al Capone has risen from a humble bookkeeper to second-in-command of Johnny Torrio's criminal empire in Chicago. The empire is worth the modern-day equivalent of $35 million. Capone purchases a home for his family and moves them from New York to Chicago. Torrio and Capone expand their empire from Chicago's South Side to the North Side, which is controlled by Chicago's second largest gang, the Irish. Violence erupts as ruthless Irish gang leader Dean O'Banion protects his territory and bootlegging business from Torrio and Capone.

A Good American tells the story of the best code-breaker the USA ever had and how he and a small team within NSA created a surveillance tool that could pick up any electronic signal on earth, filter it for targets and render results in real-time while keeping the privacy. The tool was perfect - except for one thing: it was way too cheap. Therefore NSA leadership, who had fallen into the hands of industry, dumped it - three weeks prior to 9/11.
This is the story of former Technical director of NSA, Bill Binney, and a program called ThinThread.

This series shines a spotlight on the influential builders, dreamers and believers whose feats transformed the United States, a nation decaying from the inside after the Civil War, into the greatest economic and technological superpower the world had ever seen. The Men Who Built America is the story of a nation at the crossroads and of the people who catapulted it to prosperity. In the first episode, Cornelius Vanderbilt grows from a steamboat entrepreneur to the head of a railroad empire, and gets into a heated rivalry with Jim Fisk and Jay Gould; the up and coming John D. Rockefeller founds Standard Oil. Many business owners lay their own rail lines which leads to the Panic of 1873. Later, Rockefeller starts to expand his wealth by diverting his business from the railroads to a new innovation, oil pipelines.

Tyson begins the episode by explaining the nature of the speed of light and how much of what is seen of the observable universe is from light emanated from billions of years in the past. Tyson further explains how modern astronomy has used such analyzes via deep time to identify the Big Bang event and the age of the universe. Tyson proceeds to describe how the work of Isaac Newton, William Herschel, and James Clerk Maxwell contributed to understanding the nature of electromagnetic waves and gravitational force, and how this work led towards Albert Einstein's Theory of Relativity, that the speed of light is a fundamental constant of the universe and gravity can be seen as distortion of the fabric of space-time. Tyson describes the concept of dark stars as postulated by John Michell which are not visible but detectable by tracking other stars trapped within their gravity wells, an idea Herschel used to discover binary stars. Tyson then describes the nature of black holes, their enormous gravitational forces that can even capture light, and their discovery via X-ray sources such as Cygnus X-1. Tyson uses the Ship of Imagination to provide a postulate of the warping of spacetime and time dilation as one enters the event horizon of the black hole, and the possibility that these may lead to other points within our universe or others, or even time travel. Tyson ends on noting that Herschel's son, John would be inspired by his father to continue to document the known stars as well as contributions towards photography that play on the same nature of deep time used by astronomers.