 |
Harry Townes as Jim Benedict |
 |
John Agar as Col. Matthews |
 |
Whitney Blake as June |
 |
Cecil Kellaway as Dr. A.A. Andrews |
 |
Charles Aidman as Dave |
 |
Gail Kobe as Kim |
 |
Edward Platt as Dr. Easton (as Edward C. Platt) |
 |
William Traylor as Space Ship Crew |
 |
John Clarke as Space Ship Crew |
|
Joel Lawrence as Space Ship Crew |
 |
Jon Lormer as Prof. Logan |
 |
Robert Cornthwaite as Sen. Royce |
 |
Sam Edwards as Technician (uncredited) |
 |
Frank Gerstle as Member of Senate Investigating Committee (uncredited) |
 |
Biff McGuire as Technician (uncredited) |
|
Ed Prentiss as Mr. Duffy (uncredited) |
 |
Bert Remsen as Technician (uncredited) |
| Directing | Joseph Pevney | Director |
| Sound | Van Cleave | Music |
| Production | James A. Schulke | Supervising Producer |
| Sound | Winston H. Leverett | Sound |
| Crew | Loyal Griggs | Cinematography |
| Costume & Make-Up | Wally Westmore | Makeup Supervisor |
| Art | Hal Pereira | Art Direction |
| Writing | Alford Van Ronkel | Writer |
| Art | Ray Moyer | Set Decoration |
| Art | Sam Comer | Set Decoration |
| Art | Albert Nozaki | Art Direction |
| Sound | Lyle Figland | Sound |
| Production | Alford Van Ronkel | Producer |
| Editing | Jerry Webb | Editor |
| Directing | Richard Caffey | Assistant Director |
