"The Disappearance of Lady Frances Carfax" by Arthur Conan Doyle is a short story published in 1911. When a wealthy, unmarried woman vanishes while traveling in Europe, Sherlock Holmes sends Watson to investigate alone. Following Lady Frances's trail from Switzerland to Germany, Watson encounters a mysterious bearded stranger, suspicious missionaries, and a series of puzzling clues. The investigation leads back to London, where Holmes discovers a sinister criminal masquerading as a religious scholar—and a coffin that may hold the key to Lady Frances's fate. (This is an automatically generated summary.)