The Doctor attempts to persuade Captain Hart of the danger that the Master represents. Eager to make contact with the Sea Devils, the Doctor journeys deep into the ocean.
Name | Type | Role | |
---|---|---|---|
Malcolm Hulke | Writer | ||
Stanley McGeagh | Guest Star | ||
Brian Vaughan | Guest Star | ||
Colin Bell | Guest Star | ||
David Griffin | Guest Star | ||
Clive Morton | Guest Star | ||
Michael E. Briant | Director |