<p>Soon after Gwenda moved into her new home, oddthings started to happen. Despite her best efforts tomodernize the house, she only succeeded in dredgingup its past. Worse, she felt an irrational sense ofterror every time she climbed the stairs.<p>In fear, Gwenda turned to Miss Marple to exorciseher ghosts. Between them, they were to solve a"perfect" crime committed many years before.