Enquiry
by Dick Francis (1969)

When Kelly Hughes rides the favourite into second place, he gets penalised. 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.

Not the best of his books. This lacks the action of others.