Too far / Sylvia Day.

Lily Black was presumed dead for years. Now she's returned to the unquestioning arms of her loving husband, Kane. Where she's been is a mystery, but the deadly danger she's brought with her is manifest to all. Aliyah, Kane's mother, has worked hard to position herself in power. No one escapes her bitter ambition, not her children and certainly not a woman who may not be who she claims. Amy, Kane's sister-in-law, has been a pawn throughout the dangerous games the family plays. She's beginning to grasp the rules, though, and won't stop until all the pieces on the board have toppled.