Horizon is a mysterious planet which neither Zen nor Orac can shed any light on. After teleporting down the crew are captured by Federation guards. Avon considers leaving the planet by himself with the Liberator.
| Name | Type | Role | |
|---|---|---|---|
| Allan Prior | Writer | ||
| William Squire | Guest Star | ||
| Darien Angadi | Guest Star | ||
| Souad Faress | Guest Star | ||
| Brian Miller | Guest Star | ||
| Paul Haley | Guest Star | ||
| Jonathan Wright-Miller | Director |