一(🈯)名针对小女(🔨)孩(hái )作(⛲)案的连环杀手(Peter Lorre 饰(shì ))出没,城中(zhōng )(🆖)人心(🐉)惶(🛤)惶(huáng )(🌰)。警察全体出动,频(pín )繁突(tū )击(jī )检查(chá )。黑帮(bāng )(🌗)首领(Gustaf Gründgens 饰)因生意受到(dào )严重(🐖)影响,决定利用乞丐的隐蔽(😻)性布(bù )下天罗地网。卖气球的(de )盲丐(Georg John 饰)通过《在妖(yāo )王宫中》的口哨声辨出了(🐑)杀手,他(tā )的同伙(Carl Balhaus 饰)趁机(jī )将“Mörder”的首(🐀)字(zì )母“M”标记在其背(bèi )上(🈁)。虽然警方锁定了杀(🛎)手(shǒu )(💍)的住(🐾)处(🦇),但杀(shā )手(shǒu )被乞丐围(🐨)困(👪)于商(shāng )(🤷)业大厦,成了瓮中之鳖(biē )。深(🏒)夜,在黑帮私设(shè )(📧)的(🔍)法(😙)庭上(shàng ),杀手会为自己(🔷)作(zuò )出怎(zěn )样的辩护(hù )(🏃)?