Dr. Vulcan—Traitor

A mysterious criminal known only as Dr. Vulcan has been stealing secrets and inventions from Science Associates to sell to foreign powers, and killing the inventors while making the deaths look like accidents. His latest victim, Professor Millard (James Craven) barely survives when a control panel explodes, showering him with electricity. With the help of fellow scientist Jeff King (Tristram Coffin), Millard sets up shop out of town in an abandoned cave. He lets the world believe he is dead so that he can finish his new atomic rocket suit as well as discover the identity of Dr. Vulcan.