| Craig Hill | ... | Tom Endicott | |
| Paula Raymond | ... | Marcia | |
| Dayton Lummis | ... | Dr. Morris | |
| Gregory Morton | ... | Examiner | |
| Harvey Stephens | ... | Walter Cooper | |
| John Bryant | ... | Hank | |
| Nancy Hale | ... | Barbara | |
| Addison Richards | ... | Sage | |
| Brad Trumbull | ... | Jack | |
| Bernadette Hale | ... | Joan | |
| Meg Wyllie | ... | Helen Cooper | |
| Roy Engel | ... | Jameson (as Roy Engle) | |
| rest of cast listed alphabetically: | |||
| Stephen Ellsworth Crowley | ... | Crowley - ATC Official (uncredited) | |
| Francis De Sales | ... | George Manson (uncredited) | |
| Eden Hartford | ... | Miss Ford (uncredited) | |
| Joe Haworth | ... | ATC Headquarters Radio Operator (uncredited) | |
| Jerry James | ... | Ray Houser (uncredited) | |
| Jack Mann | ... | Garrett (uncredited) | |
| Carl Princi | ... | TV Newscaster (uncredited) | |
| Ed Stoddard | ... | O'Connor (uncredited) | |
Directed by | |||
| Reginald Le Borg | |||
Writing credits | ||
| Ralph Hart | (written by) & | |
| Judith Hart | (written by) and | |
| Orville H. Hampton | (written by) (as Owen Harris) | |
Produced by | |||
| Robert E. Kent | .... | producer | |
Original Music by | |||
| Richard LaSalle | |||
Cinematography by | |||
| Gilbert Warrenton | |||
Film Editing by | |||
| Kenneth G. Crane | |||
Casting by | |||
| Ralph Acton | |||
Set Decoration by | |||
| Morris Hoffman | |||
Costume Design by | |||
| Jerry Bos | |||
| Sabine Manela | |||
Makeup Department | |||
| Frances Sperry | .... | hair stylist | |
| Harry Thomas | .... | makeup artist | |
Production Management | |||
| Joseph Small | .... | production manager | |
Second Unit Director or Assistant Director | |||
| Herbert S. Greene | .... | assistant director | |
Art Department | |||
| Max Frankel | .... | property master (uncredited) | |
Sound Department | |||
| Alfred R. Bird | .... | sound effects editor (as Al Bird) | |
| Ralph Butler | .... | sound director | |
Special Effects by | |||
| Barney Wolff | .... | special effects | |
Music Department | |||
| Sid Sidney | .... | music track editor | |
Other crew | |||
| Sam Freedle | .... | script supervisor | |
| Robert A. Petzoldt | .... | chief technician (uncredited) | |
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| King of the Rocket Men | The Black Widow | The Spider Returns | Radar Patrol vs. Spy King | The Mysterious Pilot |
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| Full cast and crew | Company credits | External reviews |
| IMDb Adventure section | IMDb USA section |
A miniscule budget works against the Cold War political theme of guilt and responsibility over control of nuclear weapons, in this little disaster film/morality tale hybrid. The dialogue leaves a lot to be desired, and the budget is non-existent. But a germ of an idea is there. The ending won't surprise anyone used to "The Twilight Zone."