” Seraphine is staying at Summerbourne, her family’s manor on the Norfolk coast, mourning the death of her father and reminiscing about her childhood. While rifling through old family photo albums, she is shocked to stumble across a chilling image. In it, her mother holds a baby, and Seraphine’s older brother and father stand smiling in the picture. The photograph is picture-perfect: a family posing proudly with their newborn. But Seraphine is a twin, and hours after she and her twin brother, Danny, were born, her mother tragically threw herself from the cliffs behind their luxurious home.
The mourning daughter begins a hunt for clues as to what happened on that dreadful day and why only one baby is in the photograph. Her search leads her to Laura, the family’s former au pair, who mysteriously left Summerbourne the same day Seraphine and Danny were born and their mother died. Then messages—at first subtle and then explicit—are sent to stop Seraphine from digging any deeper. Her brothers begin to worry for her sanity and then her safety, as odd events start to unfold throughout her search for the truth.”