“What a cheerful liar she must think I am,” he reflected. “She caught me in that fool yarn about meeting her brother here last summer; and now, after deliberately promising to teach her that stroke, I don't go near her. What a miserable liar she must think I am! And I guess I am. By George, I can't be such a cad. I've got to make good somehow. I must give her ONE lesson. I must.” The tide served for bathing about three that afternoon. At ten minutes before that hour the substitute assistant keeper of Eastboro Twin-Lights tiptoed silently to the bedroom of his superior and peeped in. Seth was snoring peacefully. Brown stealthily withdrew. At three, precisely, he emerged from the boathouse on the wharf, clad in his bathing suit. Fifteen minutes after three, Seth Atkins, in his stocking feet and with suspicion in his eye, crept along the path to the edge of the bluff. Crouching behind a convenient sand dune he raised his head and peered over it. Below him was the cove, its pleasant waters a smooth, deep blue, streaked and bordered with pale green. But the water itself did not interest Seth. In that water was his helper, John Brown, of nowhere in particular, John Brown, the hater of females, busily engaged in teaching a young woman to swim. Atkins watched this animated picture for some minutes. Then, carefully crawling back up to the path until he was well out of possible sight from the cove, he rose to his feet, raised both hands, and shook their clenched fists above his head. “The liar!” grated Mr. Atkins, between his teeth. “The traitor! The young blackguard! After tellin' me that he . . . And after my doin' everything for him that . . . Oh, by Judas, wait! only wait till he comes back! I'LL l'arn him! I'LL show him! Oh, by jiminy crimps!” He strode toward the doorway of the kitchen. There he stopped short. A woman was seated in the kitchen rocker; a stout woman, with her back toward him. The room, in contrast to the bright sunshine without, was shadowy, and Seth, for an instant, could see her but indistinctly. However, he knew who she must be--the housekeeper at the bungalow--“Basket” or “Biscuit” his helper had said was her name, as near as he could remember it. The lightkeeper ground his teeth. Another female! Well, he would teach this one a few things! He stepped across the threshold. “Ma'am,” he began, sharply, “perhaps you'll tell me what you--” He stopped. The stout woman had, at the sound of his step, risen from the chair, and turned to face him. And now she was staring at him, her face almost as white as the stone-china cups and saucers on the table. “Why . . . why . . . SETH!” she gasped. The lightkeeper staggered back until his shoulders struck the doorpost. “Good Lord!” he cried; “good . . . LORD! Why--why--EMELINE!”