Twenty years ago, old Mrs. Barlow was killed in her home at 12, Pimlico Square for her priceless rubies. The murderer searched the whole house without finding them, then disappeared. The house has been empty since then, but now Paul and Bella Mallen move into the apartment. Bella Mallen suffers from forgetfulness and nervousness - at least that is what her husband tells her. An elderly horse wrangler, B.G. Rough worked as a policeman twenty years ago and still remembers the unsolved case. He notices that Mr. Mallen looks just like Louis Barre, Mrs. Barlow's nephew. And why does Mr. Mallen so mysteriously leave every night just to go into the apartment next door, nr. 14? 　　译文(2): 20年前，老巴洛太太在 Pimlico Square 12岁的时候因为她那无价的红宝石在家中被杀害。凶手搜遍了整个房子都没找到他们，然后就消失了。从那以后房子就空了，但是现在保罗和贝拉 · 马伦搬进了公寓。贝拉 · 马伦患有健忘症和紧张症——至少她丈夫是这么告诉她的。作为一名年长的驯马师，B.G。 Rough 二十年前当过警察，现在仍然记得那个悬而未决的案件。他注意到 Mallen 先生长得很像 Louis Barre Barlow 太太的侄子。为什么 Mallen 先生每晚都神秘地离开就为了去隔壁的公寓 NR。14岁？