The Case of the Secret Tunnel

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The arrival of Mr. Grange at 31 Albion Street sparks Maisie's curiosity and suspicion. As she observes his strange behavior and late-night wanderings through London, she becomes increasingly convinced that he is hiding something significant. The intrigue deepens with the discovery of a mysterious object in his room, prompting Maisie to unravel the truth behind his enigmatic presence and the secrets he may be concealing.