Ranger Cal Nyx discovers a badly decomposed body out in the bush. When the remains are identified as someone she once knew, the police keep a very close eye on her. And once it emerges that the victim was the main suspect in an old murder case, the case takes a complicated turn. With family issues bubbling away in the background, Cal starts to feel the heat. She has a difficult history, and when the police start probing into her private life, she finds herself in a race against the clock to solve the crime. But the murderer has Cal in their sights, and she has a choice to make - catch a killer, or do right by her family?