I actually agree with you mani!!
This had crossed my mind yesterday when they kept repeating that it is hard to get DNA testing off a body that has been in water.
The other thing that kept me thinking was! they kept saying on the news that the person must know the area because of the secluded areas he/she they were dumping the bodies. But with things like sat nav's available now you really don't have to know the areas do you.....
