Prof. Millard pretends to be dead and helps Jeff King ferret out Vulcan, the evil traitor at the science academy. Donning his Rocket Man costume King goes from one hair raising rescue to the next in order to keep the newly invented Decimator out of the clutches of Vulcan and his minions.
- Genre: Action, Adventure, Crime, Science Fiction
- Studio: Republic Pictures
- Keyword: cold war, investigation, supervisor, harbor, back pack, woman reporter, cab driver, girl heroine, los angeles, california, movie serial
- Cast: Tris Coffin, Mae Clarke, Don Haggerty, James Craven, I. Stanford Jolley, House Peters Jr.