The Purple Monster (Roy Barcroft) needs money to fund his plan to build a fleet of rockets so Mars can invade Earth, and the $100,000 sitting in the Foundation's vault will do nicely. With the Purple Monster's superior technology (except the inferior Martian rockets!) and safecracking assistance from his henchman Garrett (Bud Geary), the vault will be robbed tonight! But even if they can get past the locks, can they get past Craig Foster's fists? (1945 - Republic Pictures)
