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 Heathers crime, Jess begins to wonder if she really knew either sister at all . . .