Geographical profiling is where officers find bodies or crimes in a certain area, by this the area that the body is found is investigated to try and narrow down to find where the perpetrator lives. There are two types of geographical profiling theories which are “circle theory” and “corridor theory”. Circle theory is when plotting a sequence of crime on a street map area. Two crimes are further away from each end of the diameter of the circle. When the circle are plotted on to the map, the areas within the circle is a 78% chance of were the perpetrator lives.
Corridor theory is when there is a familiar similarity between crimes as these links usually with a motorway or a road or a railway as these routes are common for transport. By this the investigator would find the nearest link going through the crimes. Then the patterns of offences of the perpetrator are plotted onto the map these are more likely to be times, dates, stations and services. By these assumptions can be made of where the perpetrator lives or works.
Assumptions are when the first crime had taken place of the perpetrator committed as the perpetrator might live with these areas. Criminal profiling is when the information gained from the victims is valuable as they might know who is perpetrator, as this shows a link between them. The victim could give a detail of how the perpetrator looks like in away it helps the investigators to find a similar person who looks like the perpetrator or is the perpetrator comparing what the description of the victim given, as this would shorten their search down.
Many links can show between crimes as leading a crime leads to modus operandi. This shows the way of how the perpetrator murdered the victim. Such examples are man slaughtered, poisoned, strangled or killed them in a slow or fast way. These methods of killing shows the personality of the perpetrator is like. For an instant if the victim was killed in a slow way it shows that the perpetrator is a viscous person as the perpetrator had something against the victim, as the perpetrator wants them to suffer and feel the pain.
Or the perpetrator killed the victim in a fast way, this shows the perpetrator is not a viscous person as the perpetrator wants to get it done and over with. Location of the crime scene would benefit the investigators as this would narrow down their search of finding the perpetrator. If the murder been taken place in a pub, club, indoors, outdoors of been killed in a secluded area. From these areas there might be witnesses who might know, herd or saw the perpetrator in these areas, as this could help the investigators finding the perpetrator.
The condition of the body also implies on criminal profiling of how the perpetrator was killed. Weapons might be used to kill the victim as investigators would find if the perpetrator was left or right handed and the position of the body as it been put in a pose or a certain position e. g. arms are crossed on the chest. By this can be referred to other crime scenes to see the pose of the body was same as this could possibly identify the perpetrator.
Signatures are left behind in a crime scene as the perpetrator leaves something behind like a rose to show that it was them who killed the victim as they leave clues behind for the investigators to upon and find same signatures in other crime scenes such as a rose as this would narrow down there search of the perpetrator. The perpetrator may remove a item from the victim that they murdered as they keep that item as a trophy, as they can remember what they done to the victim and be proud of why they killed them.
Items are removed of the body are fingers, wedding rings, ears, eye balls or necklace. This would also give clues to the investigators and look at other crime scenes to see if any items what removed from the dead body and if they find the same item removed from the bodies such as the left ear, it could possibly be both murders were linked to the same perpetrator as this also narrow down the search and the time of the perpetrator.