Where do you want to go?

A shivering dockworker arrives at Baker Street before dawn, says the Thames fog "spoke in another man’s voice," and leaves behind a scrap of lantern paper marked with a shipping crest no active company should still use. Before Holmes can begin properly, the man disappears between the Embankment and Wapping. Watson suspects coercion, Lestrade suspects drink, and Holmes suspects someone is using the river’s traffic to move testimony without witnesses. You must follow the paper trail through fog, warehouses, and respectable fronts to learn whether the missing man saw a murder, rehearsed one, or was himself planted as bait.