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.
Craig Stevens
as Col. Joe Parkman
William Hopper
as Dr. Nedrick 'Ned' Jackson
Alix Talton
as Marge Blaine
Donald Randolph
as Gen. Mark Ford
Florenz Ames
as Prof. Anton Gunther
Paul Smith
as Corporal
Paul Campbell
as Lt. Fred Pizar
Pat Conway
as Sgt. Pete Allen
Phil Harvey
as Lou
Helen Jay
as Mrs. Farley
Bing Russell
as State Trooper
David McMahon
as Capt. Frank Carver
