Ambition can be a bitch.

Sisters Lilly and Kinsley Day have been inseparable ever since their parents died in a tragic car accident. To survive the hard-hearted social care system, they needed and protected each other, determined to one day make good on their dreams for a better life.

Now it's all paying off. Larger-than-life Lilly is a cultural phenomenon. She's a best-selling novelist with fame and fortune. Integral to her sister's success, the more reserved Kinsley is happy to take care of everything behind the scenes-as unscrupulous as it sometimes may be. Together the sisters navigate a glittery world of five-star hotel suites, media appearances, and blocks-long lines of admirers-a far cry from the cold, roach-infested apartment of their shared past. Their lives are so intertwined, it's hard to know where one ends and the other begins.

But fame comes with a price. As one's success grows, it becomes more and more difficult to discern who's controlling who, and why. Dark secrets begin to unravel. And for one of them, it's the last chapter.

How much would you sacrifice for someone you love?