Jack Fletcher once had a promising career as the youngest social worker in the Middlesex County Hospital’s Adult Mental Health Programme. But after suffering an attack at the hands of a client, he is left with a failed marriage, alcoholism, anxiety attacks and a social work license that is under threat of being revoked. Jack’s life is spiralling downward until he is assigned to the newest patient, Crista Sunderland, a woman who burned her house down while her twin sister was trapped inside. Crista won’t speak with police or any counsellor about what happened, but she will talk to Jack, since she can see that he is as broken as she is. Jack is tasked with finding out if the woman is as mentally ill as everyone suspects or if she is telling the truth about her sister being a serial killer. A killer whose body wasn’t found in the fire.