The Doctor, Williams and the Draconian Prince head to the Ogrons' planet to find evidence of the Master's actions but the Master tricks Jo into leading them into a trap.
| Name | Type | Role | |
|---|---|---|---|
| Malcolm Hulke | Writer | ||
| Ramsay Williams | Guest Star | ||
| Peter Birrel | Guest Star | ||
| Bill Mitchell | Guest Star | ||
| Stanley Price | Guest Star | ||
| David Maloney | Director | ||
| Paul Bernard | Director |