Smokescreen
Dick Francis Audio Book

When a sick friend asks Edward Lincoln to investigate the comprehensive failure of a string of racehorses, he agrees to help out. But it is impossible for him to go about the task quietly and unnoticed because he is now a world-class star of action films, in which he always plays the hero. And the apparently easy survey of the string of racehorses blows him through a smokescreen into circumstances where to survive he has to make himself become the man everyone else already thinks he is.