The Master arrives, posing as an adjudicator from Earth who has come to settle the dispute between the colonists and the miners. However, he has an agenda of his own.
| Name | Type | Role | |
|---|---|---|---|
| Malcolm Hulke | Writer | ||
| John Tordoff | Guest Star | ||
| Norman Atkyns | Guest Star | ||
| Roy Heymann | Guest Star | ||
| Michael E. Briant | Director |