Sherlock Holmes reported to be a lady, Dora Langley, asking famous detective, to accompany her on a trip to the continent. Mrs. Langley going to Bavaria, where he lived her niece, Helen, and his stepfather. Two months before she died in mysterious circumstances of her twin sister, Julia. Helen fears that now mortal danger hanging over her, because her aunt called for help. Both brides were soon on completion of 21 years, inherited from the mother to take great fortune. Upon the death of her sister entire fortune went to Helen. But if she dies, everything will take stepfather. Holmes Watson arrives to the Bavarian castle, carefully monitoring the behavior of the Count. Helen tells him that the dying Julia said something about "spotted ribbon". The detective decides to follow suit.
—Butterbaugh