King of the Rocket Men Part5 Fatal Dive

Upon learning how Dr. Vulcan obtains information from Science Associates' private meeting room, Jeff King makes a bogus phone call hoping to set a trap for Vulcan. But Glenda Thomas (Mae Clarke) and Burt Winslow (House Peters, Jr.) were eavesdropping too! And now they are convinced that Jeff King himself is Dr. Vulcan! (1949 - Republic Pictures)