Sleek Bodies — Mark Daniel

When Philip Glaister's self-imposed exile in the South of France is called to a halt by urgent family business, he has to return to a family and a business he'd tried to write off long ago. But his brother lies in a coma, the victim of a vicious attack, and the cause seems to lie in Swynsmere, the family racing stables.
To save what's left of the family name and fortune, Philip's hopes rest on one prize horse, ready to run the race of his life. Someone else has other ideas, though, and Philip quickly learns that the stakes aren't just high - they're deadly.
As only a horse-racing insider could tell it, Sleek Bodies is a riveting, fastpaced tale of blackmail, murder, and revenge.