After Dian has her throat slit, Lord Peter can now discover how the gang of drug pushers are able to use Pym's to hide their operation and distribute the cocaine.
| Name | Type | Role | |
|---|---|---|---|
| Dorothy L. Sayers | Writer | ||
| Bill Craig | Writer | ||
| Alan Chuntz | Guest Star | ||
| Antony Carrick | Guest Star | ||
| Alan Foss | Guest Star | ||
| Rodney Bennett | Director |