The Adventure of the Red Circle

In a quiet London boarding house, a nervous landlady confides in Sherlock Holmes about a new tenant who never shows his face. He has paid a generous rent for complete privacy, yet the occupants hear only the echo of his footsteps and receive brief, printed requests for soap or matches. The woman's anxiety grows as days pass without ever catching a glimpse of the stranger. Holmes, intrigued by the oddity, agrees to investigate the unseen guest.

At 221B Baker Street, Holmes and Watson examine the tiny chalky slips and the peculiar habit of leaving meals on a chair for an absent renter. The methodical detective notes the violet‑tinted pencil and the strict demand for anonymity, seeing a pattern that hints at a deeper purpose. Their deduction leads them into a maze of secrecy that could involve more than just a shy lodger.

Listeners are drawn into a classic puzzle of observation, deduction, and the strange psychology of a man who prefers to hide in plain sight. The episode promises the crisp dialogue and sharp reasoning that make a Holmes case unforgettable.