What happens
Superman searches the Arctic wilds for missing explorer Alonzo Craig, along with Professor Peters and Ray Martin of the Daily Planet. Captain Mike Waters is with him as they reach a native camp where Peters and Martin have been held. Peters describes a planned tribal sacrifice involving himself and Martin. Superman flies to the camp, rescues Martin, and then hears Martin's dying words about a map and a secret gallery in the ice caves. The episode ends before the full story is revealed. Original air date: May 31, 1940.
The Arctic, including an igloo camp, a coastline and an Indian camp.
Characters: Superman, Clark Kent, Captain Mike Waters, Professor Peters, Ray Martin, Alonzo Craig, Walter
Listen for: Ray Martin's dying words about a map and a secret gallery in the ice caves, and the mention of Alonzo Craig.
Written from the episode itself; it never gives away the ending. Every recording is remastered for the stream: cleaned of rumble, hiss and mains hum (and the old TV whine where we found it), then levelled in two passes to steady broadcast loudness, so one show is never quieter than the next.