With the Teranium Core still in hand, the travellers find that the Daleks will resort to anything to get it back.
| Name | Type | Role | |
|---|---|---|---|
| Terry Nation | Writer | ||
| Roger Avon | Guest Star | ||
| Douglas Sheldon | Guest Star | ||
| James Hall | Guest Star | ||
| Maurice Browning | Guest Star | ||
| Pamela Greer | Guest Star | ||
| Jean Marsh | Guest Star | ||
| Douglas Camfield | Director |