This is as classified as a juvenile for some reason, but it's really just as good and maybe a better than a lot of adult science fiction. The book continues the search began in the zero stone for the source of mysterious gem from Outer space. The hero, Murdoc Jern, accompanied by a mutant pussycat name eet, starts trying to raise money for his quest by Jim trade in... then, a hijacked archaeological Expedition Pates the way to waste our, the dreaded stronghold of the Thieves Guild.