On Telos, the Doctor is reintroduced to the Cyber Leader and meets the Cryons, the planet's original inhabitants who will go to any lengths to get their world back!
| Name | Type | Role | |
|---|---|---|---|
| Paula Moore | Writer | ||
| Jonathan David | Guest Star | ||
| Esther Freud | Guest Star | ||
| Brian Orrell | Guest Star | ||
| Faith Brown | Guest Star | ||
| John Ainley | Guest Star | ||
| Sarah Greene | Guest Star | ||
| Sarah Berger | Guest Star | ||
| Brian Glover | Guest Star | ||
| Matthew Robinson | Director |