Lanzarote, 1985. Archaeologist Howard Foster raises a strange metal artefact from the sea floor. But how is it linked to the signal the TARDIS received? Why is Turlough suddenly so worried? And why is Kamelion acting so erratically?
| Name | Type | Role | |
|---|---|---|---|
| Peter Grimwade | Writer | ||
| Peter Wyngarde | Guest Star | ||
| Edward Highmore | Guest Star | ||
| Jonathon Caplan | Guest Star | ||
| Barbara Shelley | Guest Star | ||
| Michael Bangerter | Guest Star | ||
| James Bate | Guest Star | ||
| Simon Sutton | Guest Star | ||
| Dallas Adams | Guest Star | ||
| Fiona Cumming | Director |