Applecote Manor captivates Jessie with dreams of hazy summers in the Cotswolds, the perfect place to bring up her children. But the house has an unsettling history and strange rumours surround the estate. When teenage Margot and her three sisters arrive at Applecote during the heatwave of '59, they find their aunt and uncle still reeling from the disappearance of their daughter, Audrey, five years before. Drawn into the life Audrey left behind and the mystery of her vanishing, the stifling summer takes a shocking, deadly turn. The bonds of sisterhood will be tested and an unthinkable choice will have a decades-long legacy.