The method and sequence of police solving cases.

Of course, first file a case, and then form a reconnaissance team. Then, one group searched for the name and address of the body in several places, and the other group set several circles with several dumping points as the center and the distance between the two longest dumping points as the radius. Search carefully in the circle to find the first crime scene. . . Then I visited the nearby village. You said that no one would see you when you killed and dumped the body again, but someone would still see you before you arrived! Then write an image according to the description of the villagers, and check it with the clues found by the first group, step by step.