Then She Vanishes

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 . . .