Valeska sat down and gazed long into the great open fire, her brows frowning, her hands working mechanically, absorbed in thought. Astro took a small folding chess-board and gracefully amused himself with an intricate problem in the logistics of the game. When at last he had queened his white pawn according to his theory, he looked over at his assistant and smiled to see her seriousness. In that look something seemed to pass from him to her.
"Oh!" she cried, jumping up, "does it begin with an H?"
"More properly with a C," he replied.
She shook her head and went at the problem again, and kept at it until it was time to close the studio.
The next afternoon Astro and Valeska waited for two hours across Seventy-eighth Street from Miss Mannering's house before they saw the lieutenant emerge. They had already a good description of him, and had no trouble in recognizing the tall good-looking fellow who at half past six o'clock walked briskly up the street, ran down the stairs to the subway, and took a seat in a down-town local train. Astro and Valeska separated and took seats on the opposite side of the car, watching their man guardedly. At Twenty-third Street he got out, went up to the sidewalk, and walked eastward.
Beyond Fourth Avenue was a row of three-story, old-fashioned, brick houses, back from the street. The lieutenant entered the small iron gate to one of the yards and, taking a key from his pocket, went in the front door of a house. It slammed behind him.
