One missing. One a murderer. One trying to find the truth. Flora has her whole life ahead of her - until the summer night she vanishes from her sleepy seaside town. Her sister Heather was a good girl - until the Spring morning twenty years later when she kills two strangers. Journalist Jess Fox was once like a sister to them both. But called home to investigate Heather's crime, Jess begins to wonder if she really knew either sister at all.