The man who has been terrorising Edmund Carstairs has been found dead in a hotel room, but who, Sherlock Holmes wonders, killed him and why? And did the young boy Ross, who is one of the Baker Street Irregulars, and who was watching the hotel on the night of the murder, see more than he is letting on?
Read by Derek Jacobi. Abridged by Jane Marshall
Producer: Jane Marshall
A Jane Marshall production for BBC Radio 4.