A fellow I knew seemed like a normal guy, but from things that he and his Thai wife said probably committed insurance fraud and maybe bigamy! It seems that he took out a life insurance policy and then left his wife and children back in Farangland and moved to Thailand. His wife then claimed that he had died while overseas and was able to claim the insurance after a few years while he married a Thai woman, had a child and started a new life here.
He was on about 10 years overstay when he had a heart attack and died.