Deadly Letters That Terrorized America After 9/11

Casefile

  • Jun 27, 2026
  • 1:58:58
  • Full Episode

In the tense weeks following the September 11 terror attacks in 2001, a new and invisible threat emerged across the United States. Letters laced with weaponised anthrax began arriving through the mail, infecting ordinary people and spreading fear nationwide.

As the possibility of bioterrorism gripped the country, a massive federal investigation codenamed Amerithrax was launched to uncover who was behind the attacks…

CREDITS Narration – Anonymous Host Research & writing – Milly Raso Production & music – Mike Migas Audio editing – Anthony Telfer

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Brief Summary

The episode covers the 2001 anthrax attacks, focusing on Robert Stevens' case and the investigation into the source of the anthrax letters.

Key points

  • Robert Stevens' Illness. Photojournalist Robert Stevens falls seriously ill and is diagnosed with inhalation anthrax.
  • The Envelope. A mysterious envelope arrives at the Sun, leading to a shocking anthrax outbreak.
  • The Anthrax Letter. A threatening letter containing anthrax was sent to NBC, causing panic and investigation.
  • The Washington DC Scare. An intern at Senator Dashel's office spills white powder from a letter, raising alarms.
  • Kathy Nun's Struggle. Kathy Nun becomes the fourth known victim of inhalation anthrax, raising alarms about the outbreak.
  • The Panic Spreads. As infections rise, Americans stockpile antibiotics and fear grips the nation.

Episode highlights

Tension

75/ 100High tension

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