杀人不难，只需一念之差，善恶之间，瞬息万变，人生如梦。液体收集器系统HH的安装指南

　　A mathematician and author, Luke Williams, is travelling up to London on a train when he meets a old lady, Lavinia Fullerton, who is also going to London, to Scotland Yard. Lavinia tells Luke that in her small village several people have died. The local police are certain that it was all accidental and are taking no action but Lavinia isn't convinced. In London Luke watches, ho... (展开全部)