Spring has sprung at Diddly Squat Farm, and that heralds the release of cows and chickens from their winter captivity. Jeremy's restaurant plans are in tatters, but that's not the end of his dealings with the council, who are also sending letters raising issues about what's being sold in the shop itself. From here on in, Jeremy decides that he and all around him must operate in a world of loop-holes and just-within-the-law cunning wheezes. Pepper the prized heifer still isn't pregnant and her last chance saloon arrives in the shape of a bull called Break Heart Maestro.
A chat with Alan the builder provides a Eureka Moment: the restaurant idea is not dead after all! There's much excitement as building work begins and Jeremy meets a chef called Pip. There's less excitement when he has to take his first steer to the abattoir.

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.

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.

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.

In the second episode, we see the stark differences between the modern and pristine operation on the 19th floor of the Lipstick Building and what was transpiring on the relic and shopworn 17th floor, where Madoff was running his investment advisory business and where most of the fraud was orchestrated, and from where Madoff's empire branched into the hedge fund business, which began drawing unwanted scrutiny.
In his disposition, Madoff confirms the names of four significant investors, including Jeffry Picower, a shadowy and long-time client, dating back 30 years. Although Madoff never confronted Picower or discussed the matter with him, it was suspected he knew what was going on and, because of this, had the power to torment and extort Madoff while profiting substantially from his Ponzi scheme.

The third episode emphasizes how Madoff's numbers were deemed unrealistic. Despite his competitors' investigations into these impossible figures and subsequent alerts to the U.S. Securities and Exchange Commission, the agency, swayed by Madoff's reputation, disregarded the numerous red flags. Choosing instead to look the other way, they allowed Madoff's operations to continue undeterred.