Irene Steele's life is idyllic, until it is rocked by a late-night phone call that brings news of her husband's sudden death. Even in the midst of her crippling grief, Irene cannot get one question out of her head: why was his body found on St. John, a tropical Caribbean paradise far removed from their suburban life? Leaving the cold Nantucket winter behind, Irene flies hundreds of miles to get to the island - only to learn that her husband had a secret second family. As she delves deeper into the mysterious circumstances surrounding the death of the man she loved, she is plunged into a web of intrigue and deceit belied by the pristine white sandy beaches of St. John's.