The professor and his three students are joined by the policeman who recanted his testimony in their first case (and quit the force to become a student.) They next take up the case of a man in prison for six years for the death of another man who was kicked to death. But the imprisoned man claims he was trying to stop a friend from beating the man and took the blame to prevent his friend from being implicated. The friend admits this but says he only kicked the man once in the torso, while cause of death was multiple blows to the head. Looking further into the case the team discovers a crucial police report is missing and they are determined to find it. Having done so, they find a witness to the attack was never officially questioned.