Aftermath: The Hunt for the Anthrax Killer

The deadliest attack you’ve forgotten. The investigation you never heard.

Weeks after 9/11, a second wave of terror struck the U.S.—but this time, the weapon was invisible. Anthrax-laced letters sent the nation into panic, shutting down government buildings and overwhelming law enforcement. The FBI launched one of the largest investigations in its history, unraveling a complex web of scientific clues and personal cost.

Aftermath takes you inside the case, from the science that cracked it to the mistakes that nearly derailed it. With exclusive access to declassified materials and firsthand accounts, this eight-part series reveals how the attacks reshaped America—and the hidden consequences that still linger today.

Watch the trailer here.

Live April 2, 2025