M就是凶手

There is a baby killer loose and the police can't find him. He is a sick, psychotic and confused individual, though guilty. The increased police activity trying to find the baby killer is interfering with the mob's criminal activities. The gangsters are not pleased the intense police attention so the mob decides to find him themselves. The mob bosses send the mobsters out to find him. He is found and the young girl he grabbed is saved. A mock trial is conducted in the basement of a parking garage in front of mass of gangsters who captured him and citizens demanding blood. The baby criminal is defended by a lawyer provided by the mob boss. As the police show up, the mob boss shoots the lawyer defending the baby killer because he is doing too good of a job defending the baby killer. Both the mob boss and the baby killer are taken into custody by the police for justice.