'Mr. Prohack' is a novel by Arnold Bennett, best remembered today for his novels 'Anna of the Five Towns', 'The Old Wives' Tale', and 'Clayhanger'. 'Mr. Prohack' is a book about a man who bears the same name as the title of this novel—Mr. Arthur Prohack. He is a government official who received a windfall that elevated his family's position from middle class to upper. Of course, more money does not always mean less problems—and in Mr. Prohack's case, in particular, an avalanche of problems awaits.