一座公寓里发生了凶杀案,夏洛克接到消息后赶到现场,看到406室的女主人,脸朝下倒在门口的地毯上,后脑被砸了一个大包,已经死了。桌子上是吃剩的熟菜,还有几个空酒瓶倒在地上。现场没有搏斗过的痕迹,凶手抹去了脚印和指纹。夏洛克通过调查,得到了以下情况:傍晚5点多钟,有个中年男人乘电梯到406室,他用大衣领子遮着脸,管理员没有看清他的模样。406室住着一位中年单身女子,她是一家公司的经理。6点钟的时候,电梯管理员看见女主人出门,过了一会儿,女主人拎 Homicide occurred in an apartment. After receiving the news, Shylock rushed to the scene and saw the hostess in Room 406 lying face down on the carpet at the entrance. The back of the head was smashed with a large bag and was already dead. The table is leftover cooked vegetables, there are a few empty bottles fell to the ground. No wrestling scene at the scene, the murderer erase the footprints and fingerprints. Shylock through the investigation, got the following situation: 5 o’clock in the evening, a middle-aged man took the elevator to Room 406, he covered his face with a coat collar, the administrator did not see his appearance. Room 406, a middle-aged single woman, is the manager of a company. 6 o’clock, the elevator manager saw the hostess to go out, after a while, the hostess carry