Meet Jo Beckett - a forensic psychiatrist who profiles victims' lives to help solve their deaths. On a San Francisco street, Jo confronts a scene of pure carnage: four dead, five injured after a high speed pursuit. In the mangled remains of a BMW lies prosecutor Callie Harding, dead with the word dirty written in lipstick on her thigh. Why did Harding run from the police? Why did she crash through a bridge railing? Was it an accident? Suicide? Or murder? Jo is a last resort in difficult cases. But now she's on the front line, because Callie Harding isn't the first high flyer to go down and take others with her. And if Jo can't figure out why the prosecutor died, Harding won't be the last. Jo's about to discover how dirty some secrets can be.