One of the dangers of multi-installment series featuring the same protagonist is they can morph into a sort of same-story-different-location exercise. That is, the fundamentals of each book start to replicate -- the protagonist pulls out the same bag of tricks to solve the mystery, the same types of characters appear -- and all that changes is window dressing like location or time of year.
But in the racing vernacular there’s no “holding station” for Kaehler in book three. She’s not just doing the literary version of saving fuel and tires trying to make it to the end of a several-dozen-book run of her Kate Reilly racing-themed mystery series. Instead she’s driving for the win, even in the early stages of what fans hope is a long run.