"The Adventure of the Copper Beeches", one of the 56 short Sherlock Holmes stories written by British author Sir Arthur Conan Doyle, is the last of the twelve collected in The Adventures of Sherlock Holmes. It was first published in Strand Magazine in June 1892. Violet Hunter consults Holmes after being offered a governess job subject to a number of unusual conditions, including cutting her hair short. The wage is extremely high, £120, and she decides to accept the job, though Holmes tells her to contact him if she needs to. After a number of strange occurrences, including the discovery of a sealed-off wing of the house, she does so. Holmes discovers that someone had been kept prisoner in the wing, but when Holmes, Watson and Hunter enter, it is empty. They are accused of freeing the prisoner, who was the daughter of Hunter's employer, who sets his dog on them, though it attacks him instead. It is revealed that Hunter had been hired to impersonate her employer's daughter so that her fiancé would believe she was no longer interested in seeing him, but the daughter had escaped and the pair later married.

Sir Arthur Ignatius Conan Doyle (May 22, 1859 – July 7, 1930) was a British author most noted for his stories about the detective Sherlock Holmes, which are generally considered a major innovation in the field of crime fiction, and for the adventures of Professor Challenger. He was a prolific writer whose other works include science fiction stories, historical novels, plays and romances, poetry, and non-fiction.