视频简介
Reform schools are a way of protecting society by ridding it of lawless juvenile delinquents. But who's protecting the juvenile delinquents from corrupt reform schools? Rica (Rika Aoki) could be considered a bit of an expert on reform schools, having spent most of her early life in and out of them. When Rica is dragged back once again, she gets a severe beating and is finally sent off to a mental hospital with the intention of selling her and her pals into a slave trade. A trader takes Rica's friend Jun to a mountain cottage where she's pegged for the lead in his clandestine porno film operation. Once again, it's up to tough-as-nails Rica to bust up this corrupt racket once and for all!。本片改编自日本著名推理小说家江户川乱步的同名小说，20世纪20年代的东京。无业游民乡田三郎是一间小公寓楼的住户，他偶然发现自己房间的天花板可以移开，便每天爬到屋顶夹层中偷窥他人，看到了许多外人所不知的秘密。不久他对此产生了厌倦，接着便萌生了报复平日趾高气扬的牙科医生远藤的念头。于是，趁远藤睡着时，乡田穿过屋顶夹层在他张着的大嘴里灌入吗啡，成功地害死了他。这时，远藤的闹钟突然响了，受惊的乡田慌忙返回自己的房间。远藤的死被警方判定为自杀，然而住在这间公寓里的私人侦探明智小五郎却认为想自杀的人不会设定闹钟，判断这是一起他杀案件。通过一个小细节，明智察觉到乡田就是犯人……。
