It follows Doctor Joe O'Loughlin, who appears to have the perfect life - a devoted wife, a loving daughter, successful practice as a clinical psychologist, media profile and a publishing deal. He's even a hero online after rescuing a young patient who was ready to jump from the tenth floor of the hospital where Joe works.When a young woman is found in a shallow grave in a West London cemetery, veteran police officer DI Vincent Ruiz and his young partner DS Riya Devi are assigned to the investigation. But has the young woman been murdered or is this a case of suicide?As a successful author, Doctor Joe's opinion is much sought after and when he meets DS Devi he's only too willing to offer help with profiling and his expertise. Now known for his risk-taking and rule-breaking does Joe have more to hide? His recent diagnosis with a debilitating illness could explain his behaviour. But as the investigation into Catherine's death gathers pace, we start to ask, do we know the real Joe, or does he have a secret life? And has his work as a clinical psychologist allowed him to develop a criminal mindset? Or worse?