On a summer's afternoon four-year-old Scott Henderson walked out onto a jetty over a lake in Black Ridge, Washington State.
He never came back.
John Henderson's world ended that day, but three years later he's still alive.
Living a life, of sorts - until one night he receives an email from a stranger, claiming to know what happened to his son.
Against his better judgement Henderson returns to Black Ridge, unleashing a terrifying sequence of events which threatens to destroy what remains of everything he once held dear.
Bad things don't just happen to other people - they're waiting round the corner for you too.
And when they make their way in through the cracks in your life, you won't know until it's too late.