Bluebeard's Daughter by Marion Zimmer Bradley is not a new book, but one I just recently discovered was available in ebook format (although it has been available for a while). Since Bluebeard always fascinates me, I wanted to share it with those who also find the tale fascinating.
Book description:
Sybil Ellis was a seventeen-year-old orphan with very few options: If she didn't want to be a governess or a companion--and she didn't, she had to marry. So she married Dr. Philip Maynard, who was old enough to be her grandfather and treated her like a daughter. In fact, he treated her like Judith, the daughter he had lost, even to calling her by that name and having all of his new servants do likewise. But eventually Sybil learned that there had been other "daughters" before her, and she realized that this was not just a harmless eccentricity.