"Ashley Ream has an absolutely astounding voice -- she is one of the most compelling, sharpest writers working today. The 100 Year Miracle is already one of my favorite novels of 2016." -- Gillian Flynn, #1 New York Times bestselling author of Gone GirlOnce a century, for only six days, the bay around a small Washington island glows like a water-bound aurora. Dr. Rachel Bell, a scientist studying the 100-Year Miracle and the tiny sea creatures that create it, knows a secret about the phenomenon that inspired the region's myths and folklore: the rare green water may contain a power that could save Rachel's own life (and change the world) . When Rachel connects with Harry and Tilda, a divorced couple cohabiting once again as Harry enters the last stages of a debilitating disease, Harry is pulled into Rachel's obsession and hope as they both grasp at this once-in-a-lifetime chance to save themselves.