When an experimental atomic rocket crashes somewhere off-radar, its three developing scientists are joined by three Air Force men in tracking it down to a small Pacific island, where it apparently has landed on the plateau of the island's steep-walled, taboo mountain.

• Sigmund Neufeld Productions
• Cesar Romero
• John Hoyt
• Hugh Beaumont
• Chick Chandler
• Sid Melton
• Whit Bissell
• Hillary Brooke
• Murray Alper