Reeling from stress, an FBI suspect begins acting erratically. But the agents in charge of the investigation refuse to let up.

From Campside Media and Sony Music Entertainment, this is Season 4 of Cover Up: The Anthrax Threat.

Unlock all episodes of Cover Up: The Anthrax Threat, ad-free, right now by subscribing to The Binge. Plus, get binge access to brand new stories dropping on the first of every month — that’s all episodes, all at once, all ad-free. Just click ‘Subscribe’ on the top of the Cover Up: The Anthrax Threat show page on Apple Podcasts or visit GetTheBinge.com to get access wherever you get your podcasts. Find out more about The Binge and other podcasts from Sony Music Entertainment at sonymusic.com/podcasts and follow us @sonypodcasts and @campside_media

Learn more about your ad choices. Visit podcastchoices.com/adchoices