>> reporter: deep in grief, karl began to feel it might be time to leave the dream behind. but then, just as before, the treasure hunter reached out with a can't-miss opportunity. >> e-mailed me that he had found this kris. >> reporter: kris? >> kris is a muslim knife. had an ivory handle and had golden silver inlay in the sheath. i saw a picture of it. it looked great. >> reporter: the kris, dennis told karl, had to be worth $10,000. but he let karl have it for a mere $1,000. dennis' gift, if you will, to make up for the money karl had already lost. so, karl sent the money and he sent it gratefully. then dennis e-mailed him again and said, he met some muslim rebels in the southern philippines. and they told him about a sunken ship which contained platinum bars. and if karl would send him a few thousand more, he would go after those bars and both of them would make a lot of money, certainly make up for the money karl lost and then some. already burned and battling death, karl tried to resist. but the treasure hunter proved too persuasive.