The darkest time of day to be alone... Welcome to Eris. The island with one house, one resident, one exit. Cut off from the rest of Scotland for twelve hours every day. Vanessa once lived here. A famous artist whose shamelessly unfaithful husband disappeared from the face of the earth twenty years ago. Now Grace lives here. A solitary creature of the tide, comfortable in her isolation. An unexpected and shocking discovery in a gallery in distant London brings a visitor to the island. And now the secrets of Eris are at risk of coming to the surface... Paula Hawkins, the author of the #1 global bestseller The Girl on the Train, returns with a masterful novel reminiscent of the well-crafted suspense stories of Shirley Jackson and Patricia Highsmith. Blue Hour is the most suspenseful and powerful thriller she has written to date and comes to establish Hawkins' position among novelists who weave the nuances and style with fine skill.