King of the Rocket Men (1949)

Chapter Three DANGEROUS EVIDENCE - Rocket Man rescues Glenda from the crashing car but Dirken gets away with the important negative. Later, at the Science Associates conference, Jeff sets up a plan to trap Dirken while he is attempting to get a special developer for the enlargement of the negative. Dirken gets away with Dr. Vulcan's help, but Jeff, as Rocket Man, traces him to a hideout in the country. There, the negative is being developed which might reveal the identity of Rocket Man. Jeff, in an attempt to prevent this, is captured and held prisoner while the picture is being developed right under his nose. To Be Continued.