Laurence Turner, a pharmacist from Sydney, is wracked with guilt after his fiancé dies on a sailing trip. The tragedy is followed by yet another fatal incident when he dispenses the wrong medication to a customer. Laurence moves to the Clare Valley in South Australia for a fresh start, but when he stumbles across the dead body of a visiting American reporter, things take a turn for the worst. The case explodes into far more than Laurence could ever expect with the arrival of a beautiful American woman, Skyler Hawthorne. Her troubles put Laurence in the path of both domestic and foreign agents, including a dangerous Russian spy who believes Laurence is hiding a secret.