
Alan Holt is a radio expert who has invented a death ray machine for the U.S. government. International spy Drakma wants to get his hands on the invention and he sends his henchmen to attack Holt in his laboratory.
| Actor | Role |
|---|---|
| Mary Walsworth | |
| Alan Holt | |
| Drakma (as Tyrone Power) | |
| Kurder | |
| Claire | |
| JJack Lionel BohnDon Powell | Don Powell |
| The Cripple | |
| Adm. Walsworth | |
| Lab assistant |