The Hot Zone

After an anthrax attack on US soil, Special Agent Matthew Ryker begins his investigation.

The investigation moves to New York as a new case of anthrax appears at 30 Rock.

An attack on Capitol Hill sends panic through DC. Officials struggle to properly respond.

Ryker and team trace how the letter was sent, as another side of Bruce comes to light.

Dani's lone wolf theory gains traction, and the FBI surprises Ryker with an announcement.

Bruce becomes increasingly unhinged as the FBI circles him as a suspect.