While on a fateful mission to bring back the antidote to the Purple Death, Polarite, Flash and his party are attacked by the "walking bombs," an army of mechanical men.
| Name | Type | Role | |
|---|---|---|---|
| Basil Dickey | Writer | ||
| Barry Shipman | Writer | ||
| George H. Plympton | Writer | ||
| Ford Beebe | Director | ||
| Ray Taylor | Director |