Fearful of a war breaking out between the Silurians and mankind, the Doctor attempts to make peace between the races. But there are those on both sides unwilling to listen.
| Name | Type | Role | |
|---|---|---|---|
| Malcolm Hulke | Writer | ||
| Geoffrey Palmer | Guest Star | ||
| John Churchill | Guest Star | ||
| Paul Barton | Guest Star | ||
| Nigel Johns | Guest Star | ||
| Timothy Combe | Director |