What's Bred in the Bone by Grant Allen

The voyage to the Cape was long and tedious. On the whole way out, Guy made but few friends, and talked very little to his fellow passengers. That unhappy recognition by Granville Kelmscott the evening he went on board the Cetewayo poisoned the fugitive's mind for the entire passage. He felt himself, in fact, a moral outcast; he slunk away from his kind; he hardly dared to meet Kelmscott's eyes for shame, whenever he passed him. But for one thing at least he was truly grateful. Though Kelmscott had evidently discovered from the papers the nature of Guy's crime, and knew his real name well, it was clear he had said nothing of any sort on the subject to the other passengers. Only one man on board was aware of his guilt, Guy believed, and that one man he shunned accordingly as far as was possible within the narrow limits of the saloon and the quarter-deck.

Granville Kelmscott, of course, took a very different view of Guy Waring's position. He had read in the paper he bought at Plymouth that Guy was the murderer of Montague Nevitt. Regarding him, therefore, as a criminal of the deepest dye now flying from justice, he wasn't at all surprised at Guy's shrinking and shunning him; what astonished him rather was the man's occasional and incredible fits of effrontery. How that fellow could ever laugh and talk at all among the ladies on deck -- with the hangman at his back -- simply appalled and horrified the proud soul of a Kelmscott. Granville had hard work to keep from expressing his horror openly at times. But still, with an effort, he kept his peace. With the picture of his father and Lady Emily now strong before his mind, he couldn't find it in his heart to bring his own half-brother, however guilty and criminal the man might be, to the foot of the gallows.