When a melting iceberg releases a prehistoric giant praying mantis, a palaeontologist works alongside the military to kill it after it attacks scientific outposts on its way to Washington and New York.
Col. Joe Parkman
Dr. Nedrick 'Ned' Jackson
Marge Blaine
Gen. Mark Ford
Prof. Anton Gunther
Corporal
Lt. Fred Pizar
Sgt. Pete Allen
Lou
Mrs. Farley
State Trooper
Capt. Frank Carver
Narrator (voice)
Photographer (uncredited)
C-47 Pilot (uncredited)
