For Kicks — Dick Francis

Daniel Roke didn't want the job. It didn't matter that the man who called himself the Earl of October was offering more money than he'd ever imagined. Daniel couldn't leave his Australian stud farm to go help look into an English horse-doping scandal.

Or so he said at first. But soon he was in England, taking over investigative duties vacated by a racing journalist who had died in what was described as an auto accident. And soon enough Daniel learned that men who would give drugs to horses would do much worse to human beings....