What's Yours is Mine - Tess Stimson

Like a princess in a fairytale, Grace Hamilton has been showered with blessings: professional success, a happy marriage, and she even lives in a beautiful castle. But the only thing she really wants - her heart's desire - is the one thing she can never have.

Her sister, the beautiful Susannah, has made a mess of her life. Like a reverse Midas, everything she touches turns to shit.

But then Fate puts Grace's future in Susannah's careless hands, changing the balance of power between the sisters forever.

And when an impulsively generous gesture suddenly turns sour, their sibling rivalry takes a sinister - and potentially lethal - turn.