Suddenly, a creature of pure evil has materialized in our world! Can Doc dive into the mysterious land of the occult to confront a demon -- before the demon ends his brilliant career?

The Bantam cover of this novel reuses a part of the artwork from the Bantam edition of "The Green Death."

This is a pretty suspensful post war entry, maybe a little overwrought but a fun couple hours' read. As with many of these later Docs the explanation tended to fizzle after a big build-up but Lester Dents prose had become very slick and smooth by this time, a pleaure to read.