It is 1997, and in a basement flat in Hackney Isla Green is awakened by a call in the middle of the night: her father, Joe, phoning from Sydney.
30 years ago, in the suffocating heat of summer 1967, the Greens’ next-door neighbour Mandy disappeared. Joe claims he thought she had gone to start a new life; but now Mandy’s family is trying to reconnect, and there is no trace of her. Isla’s father was allegedly the last person to see her alive, and he’s under suspicion of murder.
Back home in Sydney, Isla's search for the truth takes her back to 1967, when two couples lived side by side on a quiet street by the sea. Could her father be capable of doing something terrible? How much does her mother know? And is there another secret in this community, one which goes deeper into Australia’s colonial past, which has held them in a conspiracy of silence?