Task: Text Categorization
Input (English): The wife of this novel's protagonist has left him for an American, and his financial worries stem from having to care for his teenage daughter, who goes to an expensive Catholic school. At the beginning of the novel, that daughter, Milly, cajoles him into buying her a horse, and it is this additional expense that spurs him to accept an offer of work from Hawthorne. His German friend, Dr. Hasselbacher, advises him to "take their money, but don't give them anything in return," which inspires him to invent reports, agents, and schematics to send to his employers. For 10 points, name this novel, in which James Wormold, a vacuum cleaner salesman from Cuba, is recruited into the British Secret Service, a work by Graham Greene. 
Output (English): Literature