Bill's improvement allowed Shana to return home a week later. In the intervening time, he and his daughter had made love every day. They had promised each other that they would never do it again after she left to return home. As she left, though, both of them, independently, doubted that they would keep that promise.

On the drive home, she had wrestled with herself over what, if anything, she would tell Tom. She knew that Tom never lied to her and never kept secrets from her, but there had been several things in her life that she hadn't told him. She certainly had never told him about how, when...