CHAPTER XII

_ALIAS_ MADAME LISTORELLE The woman thus observed marched swiftly away down the deserted street in the direction of the Town Hall at the corner, and Matherfield, after one more searching look at her, dropped the slat of the Venetian blind through which he had been peeping, and turned on his companion. At the same instant he reached a hand for his overcoat and hat. "Now, Mr. Hetherwick," he said sharply, "this has got to be a one-man job! There'll be nothing extraordinary in one man going along the streets to catc…