A giant prehistoric praying mantis, recently freed from the Arctic ice, voraciously preys on American military at the DEW Line and works its way south.
| Directing | Nathan H. Juran | Director |
| Writing | William Alland | Story |
| Production | William Alland | Producer |
| Camera | Ellis W. Carter | Director of Photography |
| Editing | Chester W. Schaeffer | Editor |
| Art | Robert Clatworthy | Art Direction |
| Writing | Martin Berkeley | Screenplay |
| Sound | Irving Gertz | Original Music Composer |
| Sound | William Lava | Original Music Composer |
| Art | Alexander Golitzen | Art Direction |
| Visual Effects | Clifford Stine | Visual Effects |
| Costume & Make-Up | Bud Westmore | Makeup Artist |
| Costume & Make-Up | Jay A. Morley Jr. | Costume Design |
| Directing | William Holland | Assistant Director |
| Art | Oliver Emert | Set Decoration |
| Art | Russell A. Gausman | Set Decoration |
