Presented by Matt Baker and Alex Jones. Hollywood star Aaron Paul joins Matt and Alex on the sofa, Michael Douglas looks to rehome 9,000 chickens, and Michael Mosley finds out about the medical hero who transformed Fleming's chance discovery of penicillin into a life-saving medicine.
| Name | Type | Role | |
|---|---|---|---|
| Michael Douglas | Guest Star | ||
| Michael Mosley | Guest Star | ||
| Aaron Paul | Guest Star |