Deep cover Russian sleeper agents have infiltrated the US and are living seemingly normal "American" lives. To neutralize this threat, the FBI begins one of the largest counter intelligence investigations in its history.

On November 23, 1985, Egypt Air Flight 648 left Athens, Greece bound for Cairo, Egypt. It would never reach its final destination. This is the story of that ill-fated flight, told firsthand by a passenger lucky enough to survive, a CIA officer who witnessed the event, and the FBI agents tasked with bringing the perpetrator to justice.

After trying for more than two decades to take down infamous arms trafficker Monzer Al-Kassar, the DEA's elite Special Operations Division devises a way to infiltrate his inner circle with an unprecedented and risky sting operation.

Elite DEA agents hunt down the world's biggest heroin trafficker amidst the Taliban insurgency in Afghanistan.

After arresting the most notorious Cuban spy of all time, the intelligence community is shocked to learn that classified information is still being transmitted to Cuba. A new investigation focused on The State Department uncovers a husband and wife team engaged in a sophisticated web of espionage.

In a story of betrayal against family and country - the FBI and CIA embark on a decade-long effort to catch the highest ranking CIA officer to ever commit espionage and his son, who also joined the spy game.

A group of Homeland Security Investigations special agents work together with the elite Defense Criminal Investigative Service to identify and capture a Chinese software pirate who threatens US national security.

In 1984, a young charismatic leader, Bob Mathews, built an army of white supremacists with the goal of eliminating Jewish people from the face of the earth and overthrowing the U.S. government. The group, known as The Order, went on a crime spree- stealing millions and murdering an outspoken Jewish radio host. A group of FBI agents in the pacific northwest works to find and capture one of the largest domestic terrorist syndicates the US has ever seen.

The story of Aleksandr Ogorodnik, a Soviet diplomat with the codename Trigon, who was recruited by the CIA at the height of the Cold War to obtain valuable intelligence on the Soviet Union.

The U.S. military's search for missing Iraq dictator Saddam Hussein.

A report on efforts by President George W. Bush and the Joint Special Operations Command to stop violent Al Qaeda leader Abu Musab al-Zarqawi.

The FBI and Defense Intelligence Agency team up to capture DIA Senior Analyst Ana Montes for allegedly passing sensitive intelligence to Cuba.

Investigations begin on an undercover sting operation to stop illegal arms; led by ICE and Homeland Security.

A Taliban double agent was instrumental in securing the release of foreign nationals held hostage in Afghanistan by the Taliban.

Engineer Chi Mak was allegedly leaking Naval secrets to the Chinese government back in 2004 and was pursued by the FBI and NCIS.

During the Cold War, the U.S. military races against time to recover classified footage from a top secret surveillance satellite that crashed into the Pacific Ocean before it falls into enemy hands.

The NSA and FBI work together to thwart an Al-Qaeda terrorist plot to blow up the New York City subway on the Anniversary of 9/11.

A team of unconventional investigators works together to take down one of the most dangerous Colombian cartels of the 1990s.

The FBI discovers a terrorist cell in the suburbs of Charlotte, NC, leading to the first material support for terrorism prosecution in the US.

After mass genocide during the Bosnian War, the US and NATO lead an effort to go after one of the world's most notorious war criminals.

The FBI has a national emergency on its hands when it discovers that the Russian government has planted a listening device in the State Department.

The FBI works alongside the National Reconnaissance Office to stop a potential spy from selling classified secrets to an enemy nation.

With help from an undercover source, the Drug Enforcement Administration launches a manhunt to capture one of the most prolific Russian arms dealers.

During the early years of the internet, the Secret Service conducts a groundbreaking mission to take down one of the first criminal hacker groups.