The Lyell team question who would kill a peaceful but outspoken anti-fundamentalist Muslim. DI Nina Ryman joins the team to investigate with suspicions that a member of the English Defense League is involved, however a shocking fact about correspondance the man had before his death, throws the case into chaos.

A ex-convict is found brutally murdered in their home, leaving the team and forensic psychologist Sasha Blackburn to try and work out who has committed the crime. Sasha has a link to a possible suspect, Paul Raynott, however as the case continues more and more of the men who Sasha works with are drawn into the case.