Enquiry A Joan Kahn-Harper Novel of Suspense

From Amazon.com: When Kelly Hughes rides the favourite into second place, he gets penalized for his trouble. Not only has he lost the race, but also his licence, as the Jockey Club suspends him - believing he threw the race. Only he knows that the problem lay with the horse's performance, not his own. Suspecting he was framed, Kelly sets about finding out how it was done, and then who might have done it.