MSNBC's Joy Reid, Journalist Bobby Ghosh, Radio Host Andy Dean, "Missing Microbes" Author Dr. Martin Blaser, and Graphic Novelist Max Brooks.
| Name | Type | Role | |
|---|---|---|---|
| Joy-Ann Reid | Guest Star | ||
| Bobby Ghosh | Guest Star | ||
| Andy Dean | Guest Star | ||
| Dr. Martin Blaser | Guest Star | ||
| Max Brooks | Guest Star |