A team of men and women investigate the mysterious deaths of two previous expeditions to a strategically important but barren world.
| Actor | Role |
|---|---|
| GGordon DevolNot listed | Not listed |
 Jacqueline RayNot listed | Not listed |
 Jackson BostwickNot listed | Not listed |
| SStan WojnoNot listed | Not listed |
 Hildy BrooksNot listed | Not listed |
| JJudith DotyNot listed | Not listed |
| BBarbara MinkusNot listed | Not listed |
| RRobert EmeneggerNot listed | Not listed |
 Paul ComiCmdr. Craig | Cmdr. Craig |
 James A. Watson, JrNot listed | Not listed |