Here is the final and I think most sunning exhibitor ad for The Master Mystery from the Arthur Moses Collection. I just love the whole mad scientist motif. One can be forgiven for mistaking this as a horror film -- a Jekyll & Hyde or Frankenstein circa 1918 if you will. But certainly this would appeal to the core audience of young movie serial watchers. In fact, these ads have put me in the mood to watch the movie again myself. A big thanks to Arthur Moses for sharing these wonderful rarities.