Horsefeathers — Caitlin Ricci

Justin was sent to get a mare, and is helpless to explain to his unhappy boss why he came back with an untouchable gray stallion instead, but there's just something about the horse that wouldn't let him leave it behind.

Of course, because an angry boss and a horse they don't need isn't enough, the horse goes missing -- leaving a strange man in his place, a man who speaks in riddles and seems more than a little crazy, but he's also just as hard to refuse as the stallion...