The obsessive scientist Dr. Miller is working on a matter-transmitter invention called the Paratron; a conspiratorial team of spies and no-goods pursue him to Alaska, trying to steal the device.
| Actor | Role |
|---|---|
 Milburn StoneJim Hudson | Jim Hudson |
 Marjorie WeaverRuth Miller | Ruth Miller |
 Edgar KennedyBosun Higgins | Bosun Higgins |
 Samuel S. HindsHerman Brock | Herman Brock |
 Martin KosleckDr. Hauss | Dr. Hauss |
 Ralph MorganDr. Miller | Dr. Miller |
 Joseph CrehanBill Hudson | Bill Hudson |
 Fuzzy Knight'Grit' Hartman | 'Grit' Hartman |
 Harry CordingCaptain Greeder | Captain Greeder |
 Anthony WardeBrandon | Brandon |
 Jack Rube CliffordAgent Dunn | Agent Dunn |
 Edward GarganKurtz | Kurtz |
 Jay NovelloEskimo Chief | Eskimo Chief |
 Tom KeeneBurger | Burger |
 George ChesebroBrandon's Henchman | Brandon's Henchman |
 Edmund CobbMiner Worker Preparing Ambush | Miner Worker Preparing Ambush |
 Stanley PriceBrandon's Henchmen | Brandon's Henchmen |
| WWilliam RuhlAgent Grey | Agent Grey |
| PPerc LaundersHaegle | Haegle |