PBS FRONTLINE to Air Two-Part Series, United States of Secrets

On May 13 and May 20, 2014, PBS FRONTLINE will air a two-part series entitled United States of Secrets , detailing the "inside story of the U.S. government's massive and controversial secret surveillance program."

"Through in-depth interviews with more than 60 whistleblowers, elected officials, journalists, intelligence insiders and cabinet officials, we have woven together the secret narrative that reveals the scale and scope of the government's spying program," says Kirk. "We've gone deep inside the story, from what really happened at the NSA and the White House in the days after 9/11, through the Bush and Obama administrations, directly into the stunning revelations from Edward Snowden."

Part one, which will broadcast as a two-hour episode May 13 at 9pm on PBS, will cover the history of the NSA surveillance program from its beginnings following the events of September 11 to the present day. Part two will explore the secret relationship between Silicon Valley and the NSA, and will be shown May 20 at 10pm on PBS. Check your local listings .