Thus the complacent, musing upper thought in the mind and on the lips of the proletary as he wended his way through the quiet and well-nigh deserted streets to the older part of the town. How much it might have been modified if he had known that the man whose face Miss Farnham had seen at the window was silently tracking him through the tree-shadowed streets is a matter for conjecture. Also, it is to be presumed that much, if not all, of the complacency would have vanished if he could have been an unseen listener in the Farnham sitting-room, dating from the time when little Miss Gilman pattered off to bed, leaving the father and daughter sitting together under the reading-lamp. At first their talk was entirely of the window apparition; the daughter insisting upon its reality, and the father trying to push it over into the limbo of things imagined. Driven finally to give all the reasons for her belief in the realities, Charlotte related the incident of the afternoon. "You may remember that I told you over the 'phone that I had a caller this afternoon," she began. The doctor did remember it, and said so. "You can imagine how frightened I was when I tell you that it was a man--a detective from New Orleans who has, or at least who says he has, been travelling thousands of miles to find me." Doctor Bertie was tickling his bearded chin thoughtfully. "He should have come to me first," he said, frowning a little at the invasion of his home. "It was about that bank robbery, I suppose?" "Yes; he thought I could tell him the man's real name. It seems that they have no identity clew to work upon. I knew at the time that 'Gavitt' was an assumed name; the man as good as told me so, you remember. This Mr. Broffin wouldn't believe that I couldn't tell him the real name, and along toward the last he grew quite angry and threatening. He insisted upon it that I knew the robber--that I had known him before the crime was committed; and he intimated pretty broadly that I am still in communication with him. Of course, it is all very absurd; but it is also very annoying to think that somebody is spying upon you all the time. I didn't want to speak of it before Mr. Griswold; but it was this detective who came twice to look in at our windows this evening." By this time the good Doctor Bertie had become the indignant Doctor Bertie. "We can't have that at all!" he said incisively. "You did your whole duty in that bank matter; and it was a good deal more than most young women would have done. I'm not going to have you persecuted and harassed--not one minute! Where is this fellow stopping?" The daughter shook her head. "I don't know. He gave me his card, but it has the New Orleans address only." "Give it to me and I'll look him up to-morrow." The card changed hands, and for a few minutes neither of them spoke. Then the daughter began again.