From the back cover:
"All has gone quiet at the Edmonstone estate otherwise known as the Spider Palace. Merek Edmonstone, the famous Philanthropist and Arachnologist, has not been seen for weeks and anybody who approaches the mansion either disappears or returns as the bearer of dark omens. They say they cannot see in through the dark windows, that cobwebs obscure their view and that looming insectoid shadows cast large many legged forms again these white vales. But it does not end with Merek, Irvetta his wife and his two sons, Winthrop and Fulton, are also missing. It seems that whatever happened at the Spider Palace sealed the fate of the Edmonstone family. It has been left to private contractors to try and solve this puzzle, seeing it is out of the jurisdiction of the city, and none have succeeded in solving the mystery so far. Who will rise to the challenge and learn what has caused the supposed demise of the Edmonstone family?"