
Every evening, Jonathan Hoag finds a mysterious reddish substance under his fingernails, with no memory of how it got there. He hires the husband-and-wife detective team of Ted and Cynthia Randall to follow him and find out. But Ted and Cynthia are mystified when they find that their own memories of what happens during their investigation do not match. There is a thirteenth floor to Jonathan's building that does not exist, there are mysterious and threatening beings living inside mirrors, and all of reality is not what they thought it was. Contents ...And He Built a Crooked House... (1941) They (1941) The Unpleasant Profession of Jonathan Hoag (1942) Our Fair City (1949) The Man Who Traveled in Elephants (1957) ...All You Zombies... (1959)
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.