The body is found by the river, near a spot popular with runners. With a serial rapist at work in the area, DI Zigic and DS Ferreira are initially confused when the Hate Crimes unit are summoned to the scene. Until they discover that the victim, Corinne Sawyer, was born Colin Sawyer. Police records and interviews with a local support group, the Trans Sisters, reveal there have been violent attacks on transwomen in the local area. Was Corinne a victim of mistaken identity - killed in a blind rage by the serial rapist when he realised what her clothes and surgery had initially concealed from him - or has the person who has attacked other transwomen stepped up their campaign of violence? With tensions running high, and the force coming under national scrutiny, this is a complex case and any mistake made could be fatal.