This taut psychological thriller begins when Karen and her nine-year-old daughter, Alice, pick up Rex from a ten-year stint in prison for murder. Flash back to the sultry summer in 1990's London when Karen, a straight-A student on the verge of college graduation first meets the exotic, flamboyant Biba and joins her louche life in a crumbling mansion in Highgate. she begins a relationship with Biba's older brother, Re, and falls into a blissful rhythm of sex, alcohol and endless summer nights. But Biba and Rex have a complicated family history - one of abandonment, suicide and crippling guilt - and Karen's summer of freedom is about to end in blood. When old ghosts come back to destroy the life it has taken Karen a decade to build, she has everything to lose. Alternating between the fragile present and the lingering past with a shocker of an ending.