The Devil's Daughter by Danielle Steel

From billion-copy bestselling author Danielle Steel, The Devil's Daughter is a fascinating portrait of two very different sisters: one a beautiful sociopath; the other, an academic, who loves her no matter what.

Billie and Mickie Banks grew up on a small farm in the American Mid-West. As sisters, they couldn't be more different. Billie, kind, loving and a gifted science graduate, longs for love. While hard-hearted Mickie, who has no interest in education or her sister, relies on her striking looks and charm, and has no regard for who she hurts to get everything and everyone she wants.

Determined to seek fame and fortune, Mickie moves to Los Angeles and becomes a model. She swiftly becomes involved with Alex Addison, a rich, smooth-talking, but unscrupulous surgeon. Billie, who has joined her sister in LA where work is more plentiful, becomes deeply suspicious of the mystery around Mickie's new life and the person she's involved with, but her concern and love for her sister is met with contempt.

But just as Mickie discovers the life of wealth and extravagance she's always craved, a major scandal threatens to blow her seemingly perfect world apart. Is Alex a criminal or is he a genius? As Mickie risks a prison sentence, Billie must ask herself whether bad people can ever truly change.