Nadio and his twin sister, Noelle, always had a unique bond. And somehow, Keeley Shipley fit perfectly into their world. But when Keeley spends the summer in England, she comes home changed, haunted by a dark memory. As she and Nadio fall in love, they try to hide it from Noelle, who's jealously guarding a secret of her own. Slowly, a life-long friendship begins to crack under the crushing weight of past trauma, guarded secrets, jealousy, obsession . . . and an unexpected love that could destroy them.