The crew aboard a space station investigates the death of a young lieutenant and uncovers a strange and deadly new life form.
| Name | Type | Role | |
|---|---|---|---|
| Stephen Lord | Writer | ||
| John Kellogg | Guest Star | ||
| Peter Baldwin | Guest Star | ||
| Stephen McNally | Guest Star | ||
| Russell Johnson | Guest Star | ||
| Richard Jaeckel | Guest Star | ||
| Arthur Batanides | Guest Star | ||
| Gail Kobe | Guest Star | ||
| Gerd Oswald | Director |