In the city of Morphoton, the Doctor, Barbara, Ian and Susan are welcomed as honoured guests and given anything they want. But Barbara soon discovers that paradise is an illusion.
| Name | Type | Role | |
|---|---|---|---|
| Terry Nation | Writer | ||
| Robin Phillips | Guest Star | ||
| Heron Carvic | Guest Star | ||
| Katherine Schofield | Guest Star | ||
| John Gorrie | Director |