Two people can keep a secret . . . if one of them is dead.
Sisters Jo and Caroline are used to hiding things from each other. They've never been close - taking it in turns to feel on the outside of their family unit, playing an endless game of favourites.
Jo envies Caroline's life - things have always come so easy to her. Then a family inheritance falls entirely to Jo, and suddenly now Caroline wants what Jo has. Needs it, even.
But just how far will she go to get it?