Husband-and-wife scientists pick up a pie-in-the-sky TV message supposedly from Mars.
| Actor | Role |
|---|---|
 Peter GravesChris Cronyn | Chris Cronyn |
 Andrea KingLinda Cronyn | Linda Cronyn |
 Herbert BerghofFranz Calder | Franz Calder |
 Marvin MillerArjenian | Arjenian |
 Orley LindgrenStewart Cronyn | Stewart Cronyn |
 Walter SandeAdmiral Bill Carey | Admiral Bill Carey |
 Willis BoucheyPresident | President |
 Morris AnkrumSecretary of Defense Sparks | Secretary of Defense Sparks |
 George BlagoiRussian Official (uncredited) | Russian Official (uncredited) |
 Bayard VeillerRoger Cronyn | Roger Cronyn |
 Tom KeeneMaj. Gen. George Burdette | Maj. Gen. George Burdette |
 Colin KennyMine Owner | Mine Owner |
 House Peters Jr.Dr. Boulting - Mitchell's Assistant | Dr. Boulting - Mitchell's Assistant |