A woman lies dead after tumbling down the stairs of a Cairns townhouse. Did she fall or was she pushed? A young man is stabbed to death in a fight in his brother’s kitchen. The remains of a baby are unearthed from behind an abandoned house. It’s all in a day’s work for Detective Cass Diamond. And what seem at first separate incidents may have a thread linking them. As Cass and her team, now including Detective Jo Murphy from the Cairns Drug Squad, delve into the background of the cases, they find unexpected threats, some of which lurk deep in the tropical rainforest surrounding the town, and some that take human form.