Icy wings endanger the plane as it flies over dangerous mountain peaks, and Clark is thrown off the wing when the plane goes into a nosedive. The swindler's attempt to blow up the North Star Mine leads to an amazing discovery.

Producer:	Frank Chase
Writer:	George Ludlum
Superman / Clark Kent:	Clayton "Bud" Collyer
June Anderson:	Marion Shockley
Captain Anderson:	Frank Lovejoy
Bartley Pemberton:	Ned Weaver
Lois Lane:	Rollie Bester
Paris White / Perry White:	Julian Noa