A researcher wears a biohazard suit at Fort Detrick, Md., where the FBI says Army scientist Bruce Ivins produced the deadly anthrax used in the 2001 anthrax attacks that killed five people.  After Ivins committed suicide in 2008, the FBI accused him of the crime.

The Anthrax Files

October 11, 2011 / 53m

Season 2011: Episode 1

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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. Seven years later, after mistakenly pursuing one suspect, the most expensive and complex investigation ever undertaken by the FBI ended when they identified Army scientist Dr. Bruce Ivins as the sole perpetrator of the attacks — after Ivins had taken his own life. Now, new questions are being raised about the FBI’s investigative methods and whether Ivins really did it. FRONTLINE, in a co-production with ProPublica, and McClatchy Newspapers, takes a hard look at the FBI’s investigation of the country’s most notorious act of bioterrorism.

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