Quiz

Roy Barcroft regarded "Captain Mephisto" in this non-western serial as his favorite role.

Three of the serial's cliffhanger gags or set pieces were copied in Indiana Jones e il tempio maledetto (1984).

Chapter: 10, is a budget-saving recap episode where sequences from previous chapters are shown for most of the running time.

Each time Captain Mephisto goes through the transformation chair, it's the same scene repeated.

Body count: 14