The Strand Magazine, Vol. 27, January 1904, No. 157

A determined young woman arrives at 221B Baker Street on a rain‑slick evening, her cheeks flushed from the hard miles she has just pedaled. Miss Violet Smith, a music teacher from a quiet Surrey village, brings a puzzling problem that seems to hinge on a single, calloused fingertip and a mysterious melody she has been forced to play. Though Holmes is deep in another affair, his curiosity is provoked by the unusual details, and he begins to unravel a web of threats that have followed the cyclist from the countryside to the heart of London.

Watson watches as Holmes pieces together clues hidden in the woman’s habit, her bicycle, and the faint strains of a tune that may hold the key to her safety. The investigation spirals into a chase through fog‑filled streets, revealing a hidden danger that threatens not only Miss Smith but also the quieter lives of those around her. The story showcases Holmes’s trademark precision and the subtle interplay between music, technology, and danger in the Victorian world.