The Doctor tries to deal with the Tractator's cunning plan, despite Turlough's best intervention. They discover the splintered TARDIS in the tunnels beneath the planet's surface, but how will they put it together again?
| Name | Type | Role | |
|---|---|---|---|
| Christopher Bidmead | Writer | ||
| Michael Malcolm | Guest Star | ||
| George Campbell | Guest Star | ||
| Jeff Rawle | Guest Star | ||
| Peter Gilmore | Guest Star | ||
| Maurice O'Connell | Guest Star | ||
| William Lucas | Guest Star | ||
| Raymond Murtagh | Guest Star | ||
| John Gillett | Guest Star | ||
| Hedi Khursandi | Guest Star | ||
| William Bowen | Guest Star | ||
| Stephen Speed | Guest Star | ||
| Ron Jones | Director |