The Rat Racket

David Henry Keller was an American writer who worked for pulp magazines in the mid-twentieth century, in the science fiction, fantasy, and horror genres. He was also a psychiatrist and physician to shell-shocked soldiers during World War I and World War II, and his experience treating mentally ill people is evident in some of his writing, which contains references to mental disorders. He initially wrote short stories as a hobby and published his first science fiction story in Amazing Stories in 1928. He continued to work as a psychiatrist while publishing over sixty short stories in science fiction and horror genres. Technically, his stories were not well-written, but focused on the emotional aspects of imaginative situations, which was unusual for stories at the time.