Gervaise Tresham, the hero of this story, joins the Order of the Knights of St. John, and leaving England he proceeds to the stronghold of Rhodes. Subsequently, Gervaise is made a Knight of the White Cross for valor, while soon after he is appointed commander of a war-galley, and in his first voyage destroys a fleet of Moorish corsairs. During one of his cruises the young knight is attacked on shore, captured after a desperate struggle, and sold into slavery in Tripoli. He succeeds in escaping, however, and returns to Rhodes in time to take part in the splendid defense of that fortress. Altogether a fine chivalrous tale of varied interest and full of noble daring