"Don't trust anyone." These, her mother's dying words, have guided Amy Philips through life and excused her every action.
Two police officers are called to the creepy Castle Sinet, where Amy has confessed to killing a man, Mike Patterson, in self-defence. Patterson was Amy's former partner, and the brother of Amy's former partner, Ivy.
Amy went to school with Ivy Patterson and decided then that she wanted her. To the police officers, she explains how she set out to dominate, taking control of brother and sister. Insidious, manipulative and infinitely dangerous, Amy invades every atom of their lives.
Can the police believe Amy or is she now controlling them? Has she committed manslaughter, or murder? And why does she insist on telling her entire loathsome story?
Amy cannot bear to be refused. Amy will stop at nothing to get her way. Amy wants something now, but what is it? Can the police find out, before it's too late?