Savage Interlude (1979)

Kate's position was impossible! Kate owed a lot to actor James St. Just. He had introduced her to his fascinating theater world. He treated her as his sister--the only family she had. If only she and James could reveal that they were brother and sister. But until then, everyone must think they lived together as lovers. Everyone included the handsome, irresistible movie producer Damien Savage. If Kate could live with James, Damien reasoned, she could live with him. But that was the last thing Kate wanted.