
North Power-Air was in trouble. Their aircraft had begun to crash at an alarming rate, and no one could figure out what was going wrong. Desperate for an answer, they turned to Waldo, the crippled genius who lived in a zero-g home in orbit around Earth. But Waldo had little reason to want to help the rest of humanity—until he learned that the solution to their problems also held the key to his own... Magic, Inc. Under the guise of an agency for magicians, Magic, Inc. was systematically squeezing out the small independent magicians. Then one businessman stood firm. With the help of an Oxford-educated African shaman and a little old lady adept at black magic, he went straight to the demons of Hell to resolve the problem—once and for all!
Author

Works of American science-fiction writer Robert Anson Heinlein include Stranger in a Strange Land (1961) and The Moon Is a Harsh Mistress (1966). People often call this novelist "the dean of science fiction writers", one of the most popular, influential, and controversial authors of "hard science fiction." He set a high standard for science and engineering plausibility and helped to raise the standards of literary quality of the genre. He was the first science-fiction writer to break into mainstream, general magazines such as The Saturday Evening Post, in the late 1940s. He was also among the first authors of bestselling, novel-length science fiction in the modern, mass-market era. Also wrote under Pen names: Anson McDonald, Lyle Monroe, Caleb Saunders, John Riverside and Simon York.