The Draghound's Trail

Aniseed on a wheel turns a city into a map. Time Pompey's pursuit of the brougham.

A drop of aniseed and a draghound beat every alibi in Cambridgeshire. Set the trail's length and the hound's working pace, and schedule the revelation.

Drawn from The Adventure of the Missing Three-Quarter (The Return of Sherlock Holmes, 1904) — read the summary & analysis, or try The Vanishing of Godfrey Staunton, this story's game. More at the Game Room and the tool bench.