On Sept 17th, 2016 a bomb detonates on 23rd Street in the Chelsea neighborhood of Manhattan, injuring over 30 people and causing mayhem. In the following hours and days, multiple bombs are discovered across Manhattan and New Jersey, all homemade devices designed to kill or maim as many people as possible. The FBI works with local law enforcement to track down a suspect who comes to be known as “The Chelsea Bomber,” culminating in a nail-biting standoff.

In 1999, three women went missing in Yosemite National Park, launching the largest search and rescue operation in US history. The bodies of two of the women are found in a burned car, and the third is only found when the killer sends a taunting note to the FBI. Five months later, when a fourth woman is found beheaded near the park, the Bureau believes a serial killer may be on the loose.

After a “family friend” murders a California mother and her 8-year-old son, the woman’s 16-year-old daughter is nowhere to be found. Authorities learn the killer has kidnapped Hannah Anderson and taken her to the remote wilderness of Idaho. The FBI’s Hostage Rescue Team receives a tip and tries to track down the pair before it’s too late.

An ATF raid on the compound of an armed apocalyptic religious group in Waco, Texas turns deadly. After a terrifying shootout, four federal agents are dead and more than a dozen are wounded. The FBI steps in with its tactical and negotiation teams, but as both sides dig in, concerns grow about the intentions of the group's leader and the welfare of the children inside.

After a fifty-one day standoff, the FBI decides to move in on the Branch Davidians and their leader, David Koresh. Three agents tell heart wrenching stories about what happened on that historic day and the deadly blaze that ensued.

Notorious Boston mobster Whitey Bulger, accused of 19 murders, has been on the run for 15 years. He went on the lam after being tipped off by a corrupt FBI agent. The Bureau brings in two hard-charging agents from outside the city to track down Bulger. Will their new approach lead to the capture of the FBI’s Most Wanted fugitive?

An unknown sniper terrorizes the citizens of Washington, D.C. over three weeks in October, 2002. FBI investigators hunt for the murderer as the killings continue. With limited evidence and a series of false leads, the investigation stalls. Will a series of cryptic clues left by the shooter help the authorities end the killing spree?

In 2013, Jimmy Lee Dykes shoots and kills a rural Alabama school bus driver and takes a five-year-old boy hostage in a carefully constructed bunker. The FBI discovers that the bunker is lined with explosives and Dykes is heavily armed. After a six day standoff, Dykes sets a deadline for the following day to broadcast his grievances on TV news, or he will kill the boy and himself.

The FBI Hostage Rescue Team works with brilliant FBI profiler Molly Amman to extract a five-year-old boy from a bunker built by a heavily armed captor named Jimmy Lee Dykes. The profiler must convince FBI director Robert Muller that negotiations with the erratic Dykes are doomed to fail.