Cast & Crew
- Louis WolheimDan Thorn
-
Robert ArmstrongLarry Doyle - Jean ArthurMary Ryan
- Hugh HerbertProfessor
- Frank SheridanEd Ryan
- Robert EdesonEngineer Tom Johnson
- Alan RoscoeJim
- William P. BurtChief Dispatcher
- Jim FarleyJoe Geraghty
- George B. SeitzDirector
- William LeBaronProducer
- James Ashmore CreelmanWriter