UNIT are summoned to Wenley Moor research station which is experiencing mysterious power losses. In the nearby caves, one of the staff has been killed and another sent insane.
Name | Type | Role | |
---|---|---|---|
Malcolm Hulke | Writer | ||
Ian Cunningham | Guest Star | ||
Fulton Mackay | Guest Star | ||
John Newman | Guest Star | ||
Roy Branigan | Guest Star | ||
Timothy Combe | Director |