剧情介绍
柏林某拆除工事的現場發現了一個裝了腐蝕性液體的汽油桶，工人還在桶裡找到屍塊。魯賓與卡洛奉命調查，死者究竟是誰？線索指出可能為薩伊德梅瑞扎蒂，他是新克爾恩區一間牙體技術所的負責人。透過調查，兩名警探揭露了一個家庭悲劇，說明了柏林非法移民面對的苦難。此外，卡洛警探私下繼續調查前搭檔麥哈克之死，他的生活因這個不幸事件而發生極大變化
In Rubin and Karow's new case, a barrel filled with acid is found by construction workers. It contains the remains of a dead body. Who is the victim and how did he get into the barrel? The prime suspect is quickly found. Saed Merizadi (Husam Chadat) owns a small dental lab in Neukölln. After their initial investigations, Rubin and Karow encounter a tragic family history of people who are living in Berlin illegally. Meanwhile Karow ventures out on his own. He wants to find out why his previous colleague had to die. His investigation causes him a lot of trouble.