He threw back his shoulders with a sudden gesture, which might have been taken for that of a man about to make a plunge, and rang the bell. The heavy wooden gate, filling all the space of the arch, was opened by a tall Numidian in house livery of white. He nodded an affirmative to Woodhouse's question, and led the way through an avenue of flaming hibiscus to a house, set far back under heavy shadow of acacias. On every hand were gardens, rank foliage shutting off this walled yard from the street and neighboring dwellings. The heavy gate closed behind the visitor with a sharp snap. One might have said that Doctor Koch lived in pretty secure isolation.
Woodhouse was shown into a small room off the main hall, by its furnishings and position evidently a waiting-room for the doctor's patients. The Numidian bowed, and disappeared. Alone, Woodhouse rose and strolled aimlessly about the room, flipped the covers of magazines on the table, picked up and hefted the bronze Buddha on the onyx mantel, noted, with a careless glance, the position of the two windows in relation to the entrance door and the
