故事中穿插的民间传说或寓言，为作品增添了神秘色彩和文化底蕴。Inanearfuture,crimesandaccidentscanbepreventedbymakingjustonephonecalltothepast.However,thepeaceofthisutopianworldwillbedisruptedbyamethodicalkillerwhoseemstohavediscoveredtheonlyflawinthissystem.
