Fighting depression in a Toronto psychiatric ward, Cordi must throw herself back into harm's way when another patient dies. Was it murder? Struggling to escape the sticky blackness of clinical depression, zoologist Cordi O'Callaghan is admitted to a psychiatric ward in Toronto. As she slowly recovers, one of the patients dies. Cordi must convince a skeptical medical staff that the woman has been murdered, while healing her own mind at the same time. Her suspects include medical personnel and patients suffering from schizophrenia, bipolar disorder, alcoholism, OCD, and panic disorder. Martha, Cordi's lab technician, tries in dramatic fashion to help Cordi solve the murder, while Jacques, a recovering alcoholic, helps out and steals Cordi's heart along the way.