Everyone knows about the afterglow: When someone dies, their spirit briefly visits the living soul who meant the most to them, before quickly fading from this world. Jake and Emma were normal teens in high school, until a tragic accident claimed Emma's life. Jake's understanding of the world is fractured when Emma's afterglow appears before him—but somehow doesn't recognize him at all. Confused, depressed, and in a daze, Jake turns to Emma's sister Elise for answers, and instead finds a bond unlike any he's ever felt before. But Elise knows what Jake doesn't, and the secrets Elise swore to keep could tear the two of them apart.