I know what you mean. One doesn't need to be an abuser to live cheaply in a cheap country abroad. Many do that without being criminal etc.
CB started off as a sexual offender and went to live in Portugal.
If you have someone like CB who is violent, who is a sexual predator, who sneaks into homes to steal whatever he can get hold of, who is a pervert raping around and filming the rape(s) for crying out loud, who is known to keep trophies, who fantasises about locking up a very young child and abusing it for days, who has been known to carry a gun... I won't even mention those dogs that were found buried with their heads in the air, because then someone will say "hey how do you know that CB did that?".
What would stop CB from doing something within a ring of child abusers? His conscience? I don't think so.
I think he would boast about his doings and would very much like to share experiences.
Now, I'm not saying that it is a fact that CB was part of some international child-rapist-ring, but I'm keeping an open mind at this.
IMO he could have been solitary as he could have not been solitary.
One thing is for sure though; when someone abducts a child by car (or attempts to), very often there is a second person sitting at the steering wheel.