The Ice Warriors' seed pods beginning materialising all over the globe while Slaar decides to kill the Doctor by T-matting him into space.
| Name | Type | Role | |
|---|---|---|---|
| Brian Hayles | Writer | ||
| Sonny Caldinez | Guest Star | ||
| Ronald Leigh-Hunt | Guest Star | ||
| Terry Scully | Guest Star | ||
| Derrick Slater | Guest Star | ||
| Christopher Coll | Guest Star | ||
| Philip Ray | Guest Star | ||
| Louise Pajo | Guest Star | ||
| Steve Peters | Guest Star | ||
| Ric Felgate | Guest Star | ||
| Tony Harwood | Guest Star | ||
| John Witty | Guest Star | ||
| Michael Ferguson | Director |