Presents the story of Lady Diana Spencer's childhood, her engagement to the Prince of Wales, the wedding, and the birth of Prince William.

As Sam explores the events leading up to the tragedy of his friends death in journal format, he must face a difficult and life-changing question: Why did he keep his friendship with Morgan a secret? And could he have done something-anything-to prevent her final actions?

Spending the summers on her family's private island off the coast of Massachusetts with her cousins and a special boy named Gat, teenaged Cadence struggles to remember what happened during her fifteenth summer.