My wife read this book years ago and said it was really good. Also, the last couple of chapters give great apologetics when dealing with Mormons:
Out of Mormonism: A Woman’s True Story
Author(s): Judy Robertson
Publisher: Bethany House Publishers
When Judy and Jim Robertson felt a spiritual void in their lives, they found “”the finest people in the world””
to embrace them and a beautifully packaged religion to entice them. Once drawn into Mormonism, they quickly climbed to leadership positions and became worthy temple Mormons, only to become disillusioned with the teaching and demands of the LDS church. From her unique insider’s viewpoint, Judy shares her life as a Mormon woman, her rediscovery of the Jesus of the Bible, and how she and Jim found freedom as they left the LDS church in the face of persecution and confrontation.