it was basically calling little old women out of money for jobs that he didn't do, and also that he had away with the ladies. >> luken discovered darker secrets as well. john supplied the opioids that killed his own addicted brother. he was alone with his sick father, the old man died rather suddenly. john wasn't charged in those cases, but there were others, said luken, and as the years went on, he developed a certain criminal specialty. >> he would go on dating websites and would find women that usually had good financial backing. he always told people he was a doctor. >> he seemed like an ideal catch, i suppose, for a lot of these women? >> he was a true con man. he'd take their money, and when they would find out about him, john would threaten them, he would terrorize them. >> how bad was he? >> john was the most dangerous, treacherous, manipulative,