Ok, not sure what you are asking, but my best guess would be the old adage that the criminal always shows up at the scene of the crime. This is not always true, I've noticed that certain crimes are more than likely to have the prepratrater show up on scene. I've seen this in arsonists, and the more radical narcissistic criminals because they live for attention, both good and bad! Had a couple of robberies, and burglaries occur at the same address, mostly because it was easy pickings the first time, they got away with the crime to date so let's do it over again.