Shirley Scott 
Like Father, Like Son [EPUB ebook] 

Kitty loves Rand, although aware shes his social inferior. She feels his many moods prove that fact, despite his amorous attentions. A smart gal would run rather than risk her heart, but mystery abounds in her employers family and shes more than curious. Why do Rand and his Aunt treat Paul like a leper, while Rands grandmother appears to adore Paul? And, If Rand is reputedly Pauls clone, why such venom for his father? Is it worth risking her heart by staying in her job long enough simply to solve the mystery?