The Best Episodes of Frontline

United States of Secrets (Part One)

#1 - United States of Secrets (Part One) 9.29

Season 2014 - Episode 9

The history of the National Security Agency's unprecedented surveillance program is investigated.

United States of Secrets (Part Two)

#2 - United States of Secrets (Part Two) 9.00

Season 2014 - Episode 10

The role of Silicon Valley in the National Security Agency's surveillance program is explored.

The Anthrax Files

#3 - The Anthrax Files 8.67

Season 2011 - Episode 26

A hard look at the FBI's investigation of the country's most notorious act of bioterrorism in 2001.

WikiSecrets

#4 - WikiSecrets 8.00

Season 2011 - Episode 14

It's the biggest intelligence breach in U.S. history-the leaking of more than half-a-million classified documents on the Wikileaks website in the spring of 2010. Behind it all, stand two very different men: Julian Assange, the Internet activist and hacker who published the documents, and an Army intelligence analyst named Bradley E. Manning, who's currently charged with handing them over. Private Manning allegedly leaked the secret cables -- along with a controversial video -- in the hope of inciting "worldwide discussion, debates and reforms." Assange's stated mission has been to force the U.S. and other governments into maximum transparency through his whistle-blowing website. Through in-depth interviews with Manning's father, Assange, and others close to the case, veteran FRONTLINE correspondent Martin Smith tells the full story behind the leaks. He also reports on the U.S. government's struggle to protect national security information in a post 9/11 world.

Prison State

#5 - Prison State 6.71

Season 2014 - Episode 8

A look at the impact of mass incarceration in America focuses on a housing project in Kentucky.