
Season Premiere
Preview: Season 2011 Episode 16 | 30s
Coming Oct. 11, FRONTLINE examines the country's most notorious act of bioterrorism.
In the fall of 2001 envelopes carrying deadly Anthrax were delivered to U.S. Senate offices, network news divisions, and a tabloid newspaper. Five people were killed, many more infected and the nation was terrorized. Now, FRONTLINE takes a hard look at the FBI's investigation of the country's most notorious act of bioterrorism.
Problems with Closed Captions? Closed Captioning Feedback
Problems with Closed Captions? Closed Captioning Feedback
Funding for FRONTLINE is provided through the support of PBS viewers and by the Corporation for Public Broadcasting. Major funding for FRONTLINE is provided by the Ford Foundation. Additional funding...

Season Premiere
Preview: Season 2011 Episode 16 | 30s
In the fall of 2001 envelopes carrying deadly Anthrax were delivered to U.S. Senate offices, network news divisions, and a tabloid newspaper. Five people were killed, many more infected and the nation was terrorized. Now, FRONTLINE takes a hard look at the FBI's investigation of the country's most notorious act of bioterrorism.
Problems with Closed Captions? Closed Captioning Feedback
How to Watch FRONTLINE
FRONTLINE is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and Vizio.
Buy Now

"Who Am I, Then?"
Explore this interactive that tells the stories of over a dozen Korean adoptees as they search for the truth about their origins — a collaboration between FRONTLINE and The Associated Press.Providing Support for PBS.org
Learn Moreabout PBS online sponsorshipPreview: S2011 Ep16 | 30s | Premieres Tuesday, October 11, 2011, 9:00 p.m. ET/PT. Check your local listings. (30s)
Clip: S2011 Ep16 | 55s | Grant Leslie tested positive for spores and was put on Cipro. But she says she felt fine. (55s)
"I Never Really Believed What I Was Hearing"
Clip: S2011 Ep16 | 1m 23s | Grant Leslie tells FRONTLINE she never had much faith in the anthrax investigation. (1m 23s)
Clip: S2011 Ep16 | 1m 42s | Grant Leslie thought she was opening a letter from children when white powder spilled out. (1m 42s)
An Unusual Delivery Sparks a Scare
Clip: S2011 Ep16 | 1m 14s | Days before she opened the anthrax letter, intern Grant Leslie was already on high alert. (1m 14s)
Providing Support for PBS.org
Learn Moreabout PBS online sponsorshipSupport for PBS provided by:
Funding for FRONTLINE is provided through the support of PBS viewers and by the Corporation for Public Broadcasting. Major funding for FRONTLINE is provided by the Ford Foundation. Additional funding...