CHAPTER SIXTEENA Door Is Found
Every night, after the last patient had gone up to bed, Mrs. Tully or Miss Lukes went round below-stairs, put up chains and shot bolts, locked doors with her special key, and retired, confident that Five Acres was secure without and within. Harold could have told her that it was not; he had found a window in the new east wing—a pantry window—which could be operated on with a pen-knife. He used it to make his own late entrance for his private tour of inspection, and departed afterwards by the same way. He was impelled to this course of conduct not only by a scientifically thorough turn of mind, but by a heavy sense of responsibility; this was the first time that Gamadge had left a matter of real importance entirely in his hands.
But strangers would not know
