The series follows the tragedy that occurred when terrorists attacked at the annual Boston Marathon on April 15, 2013. They carried out the attack by placing two homemade pressure cooker bombs which detonated near the finish line of the race 14 seconds and 210 yards (190 m) apart. That resulted in three fatalities and hundreds injured, including 17 who lost limbs. With the help of archive footage, interviews with investigators, witnesses, survivors, and occasional reenactments, it offers details about the FBI investigation into what was quickly deemed a domestic terrorist attack.
In the first episode, hours after the blasts, investigators pore over evidence. One photo and a few seconds of footage lead to a breakthrough - and an agonizing choice.

Following their identification, the Tsarnaev brothers killed an MIT policeman, then kidnapped a man in his car. They had a shootout with the police in nearby Watertown, during which two officers were severely injured (one of whom, Dennis Simmonds, died a year later). Tamerlan was shot several times, and his brother Dzhokhar ran him over while escaping in the stolen car. Tamerlan died soon after.
An unprecedented manhunt for Dzhokhar ensued, with thousands of law enforcement officers searching a 20-block area of Watertown. Residents of Watertown and surrounding communities were asked to stay indoors, and the transportation system and most businesses and public places closed. After a Watertown resident discovered him hiding in a boat in his backyard, Dzhokhar Tsarnaev is cornered into an intense standoff. As officials navigate remaining questions and suspicions, the city emerges Boston Strong.

The images of brothers Tamerlan and Dzhokhar Tsarnaev are released to the public setting off a violent chain of events. Meanwhile, clues from their past tell a complicated story - how was the radicalization of the ethnically Chechen brothers and the existence of potential collaborators. The post-9/11 biases played a role in the investigation.

This feature documentary tells the story of Mohammed Emwazi's journey from being an ordinary London boy to becoming terrorist 'Jihadi John', and the intelligence operatives' attempts to catch him by the US and British military and intelligence services.
It explores the twisted worldview espoused by ISIS - the richest and most notorious Islamist terrorist organization in history - and its propaganda machine which was operated by "Jihadi millennials" who turned social media sites such as Twitter and YouTube into recruitment platforms. Told through extraordinary first-hand accounts of key counter-terrorism and intelligence officials who identified "Jihadi John" and the voices of Muslim community leaders who worked with parents whose radicalized children fled places such as the US and Britain to join ISIS on the battlefields of Syria and Iraq.

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.

New York City, September 11, 2001. The morning everything changed.102 minutes passed between the first plane's impact into One World Trade Center, the second plane's attack on Two World Trade Center, and the eventual collapse of both buildings. In that time, people around New York experienced a range of emotions. Despite the horror and the incomprehensibility of what was happening, many knew, somehow, that they had a unique responsibility to record what they saw. They reached for their cameras.
This unprecedented documentary special joins hundreds of pieces of their footage and audiotape into a single, seamless historical record. It is an intensely personal perspective of the tragedy, communicating for the first time that morning s events, as they were experienced by people around New York. It is an evocative, authentic and reverential memorial to one of the most cataclysmic events in world history.