With no definite destination in mind, Duff wandered along down Piccadilly. It was a thoroughfare of memories for him, and now they crowded about him. Up to a short time ago he had been divisional detective-inspector at the Vine Street station, and so in charge of the C.I.D. in this fashionable quarter. The West End had been his hunting preserve. There, looming in dignified splendor through the rain, was the exclusive club where, with a few quiet words, he had taken an absconding banker. A darken ...