Book excerpt: A novel of fear and suspense. A Question of Sanity is Katherine Black's darkest, most perverse and chilling work. Author Ellie Erikson is dying. But that's just a walk in the park. She's accused of trying to murder her boyfriend, her bank account is emptied, and every aspect of her life has come into question. When hatred is born in a damaged soul, a wasting illness is the least of Ellie's troubles. And when her past comes calling, it opens a whole new chapter of secrets.