Alexandra Avellino has just found her father's mutilated body, and needs the police right away. She believes her sister killed him, and that she is still in the house with a knife. Sofia Avellino has just found her father's mutilated body and needs the police right away. She believes her sister, Alexandra did it, and that she is still in the house, locked in the bathroom. But one of these women is lying. One of them is a murderer. A mercilessly compelling thriller.