While her brother is under arrest in Sydney for a series of brutal murders, Detective Harriet Blue is sent out of town to investigate the disappearance of three young people in the middle of the Western Australian desert.

Detective Harriet Blue is a very good cop . . . gone very bad. In the space of a week, she has committed theft and fraud, resisted arrest, assaulted a police officer, and is considered a dangerous fugitive from the law. It's all because of one man, Regan Banks. He viciously killed the only person in the world who matters to Harriet-and he plans to kill her next. As she recklessly speeds toward the dark side-and finally crosses it-Harriet won't stop...

A beautiful young woman is found murdered on a river bank, and Detective Harriet Blue is convinced she's the next victim of the worst serial killer Sydney has seen in decades. But the more Harriet learns, the more she realises this murder is not what she first thought. And her own life might be tangled up in the case.