A woman impulsively murders her sister after discovering she has been having an affair with her fiancé, and later plans on killing the little girl who may have witnessed the crime.A woman impulsively murders her sister after discovering she has been having an affair with her fiancé, and later plans on killing the little girl who may have witnessed the crime.A woman impulsively murders her sister after discovering she has been having an affair with her fiancé, and later plans on killing the little girl who may have witnessed the crime.