Joseph Smith Fletcher (1863-1935) was a British journalist and author. He wrote more than 230 books on a wide variety of subjects, both fiction and nonfiction. He was one of the leading writers of detective fiction in the Victorian golden age of the short story.

The eminent Doctor Clement Holford has a strange artifact in his study. A glass-fronted wall cabinet containing many rare books about poisons and a hermetically sealed glass box in which is a single white kid glove. The story behind these objects is an uncanny one.