At Doctor Emerson's farewell bachelor dinner, the conversation veered to the struggles in the medical world to achieve success legitimately. "Tomorrow," said Emerson, "I operate on a rich old man; one of his relatives offered me $20,000 if he dies." After the others had departed, the rejected suitor lingered, and kept Emerson up late, plying him with wine. The next day, he was unfit for the operation, and the patient died. The police, arrested Emerson on evidence contained in an anonymous letter and statement of the rejected suitor that Emerson had confessed the crime. On the way to prison Emerson escaped by jumping into the river, and after a futile search was reported as drowned. Years passed, and the rival, who had married Emerson's former fiancée, became a successful ship owner. On visiting one of his ships his little daughter makes friends with a morose sailor, and a few days later she disappears. After several months an aviator brings the child back to her father, with a note tucked in her dress, "She has been saved by your bitterest enemy. Beware! Some day he will strike through her." She tells of the trip on one of his own leaky boats, the wreck, and her rescue by the sailor "doctor man," and her father realizes with terror who his enemy is.