why do they come to antwerp?cause the diamond trade is here in antwerp. >> simon: patrick peys is chief inspector of the antwerp diamond squad. >> peys: if you compare their volume and their value, the best products in the world, of course. that's why diamonds are so much used in other criminal acts. >> simon: making matters worse for cops, only the most expensive diamonds have laser inscriptions with identifying numbers. and even then, large diamonds can be recut, making it impossible to tell whether or not they've been stolen. so from what you're saying, being a diamond thief isn't a bad career. ( laughs ) you make a lot of money, and the odds are with you that you're not going to get caught. >> peys: i wouldn't advise anybody to start that career, but yes, i can imagine that, from their view that, yeah, it's a living. it's a way of living, and the possibilities of getting caught are probably not that high. >> simon: and recently, we learned the pink panthers have started branching out. we know them as jewelry

a young muslim convert preaching into the streets of antwerp. >> he started to become very religious, and praying and not wearing other clothes right away, but the robes, and we saw the science of radicalization. >> reporter: he said he was going to study in cairo, but wen he missed his sister's birthday, his father knew that he was actually in syria. >> that day, no phone call, that day, knew that 100% something is going wrong. >> reporter: and so he began to search the internet for any sign of his son. >> is discovered a video from the television station, and inside of the video, i see friends of him from the radical muslim civilization, and they speak the language of antwerp, an when i saw that, i knew that my son is there. >> reporter: against the advice of police and his lawyer, he decided to go after him himself. he kept a video diary a that he gave to cnn. his search began in the north of syria with the lawyers in aleppo. >> your son, he says he does not want to leave. >> reporter: and his video, he seems to sympathize with them, and trying on the weapon, but also capturing ext

when the dingfelder family disembarked in antwerp, rudy's father really wanted to be sent to england because he had a brother there. if you could look at it, for those of you who read german or don't read german, a lot of words are obvious. the top line says leopold dingfelder. he didn't even have a piece of paper. he's asking to go to england. and if you go to his daish the fourth line, because his brother carl j. felder of cleveland ohio, there in german in england, could we please be sent to england. sadly, though, they were sent to holland, where they ended up being deported and only rudy survived. how much time do i have? five minutes. okay. so we also, i don't want to give you the impression we just went to the media and found everyone. we didn't. we also went to try to retrace the steps physically, geographically of some of the st. louis passengers. we went to brussels where there were many st. louis passengers living, and that's a photo from the old jewish refugee neighborhood. there was a gestapo census of the jewish population in 1941 in brussels, so we had all the addresse

atika shubert, cnn, antwerp, belgium. >> how about that father?o staying on isis, the pentagon says it is, quote, beyond any terror threat they have ever seen. but is as the u.s. bombs isis in iraq, are there sleeper cells on u.s. soil? >>> and find out why the head of isis is extremely motivated to attack the united states. >> the narcissistic psychopath. he wants to be bigger than osama bin laden. so, your site gave me this "credit report card" thing. can i get my experian credit report... like, the one the bank sees. sheesh, i feel like i'm being interrogated over here. she's onto us. dump her. (phone ringing) ...hello? oh, man. that never gets old. no it does not. not all credit report sites are equal. experian.com members get personalized help and an experian credit report. join now at experian.com with enrollment in experian credit tracker sm. >>> let's take a little more time and focus on the potential threat to the united states from isis, the terror group that beheaded american james foley. isis has stormed its way across parts of syria,

there is a case, there were many people from antwerp, from belgium, working diamonds and after the war the belgian government tried to invite them to return back to belgium but most of them preferred to go to new york. so almost all of them, very few remained in cuba. >> as the professor said, my grandfather was the secretary of state in cuba at the time and he is the one that got a lot of the passengers off the ship. there were two little girls that got off and they never paid a cent. their father was a physician in cuba and he was able to get them off. there was an internal struggle in the cuban government, the cuban people and the government were very pro-jewish and the only problem was, as the professor said, there was one part, which the secretary of state and the president of cuba, and on the other side, you have benitez who was corrupt and also batista. so there was an internal struggle but the majority of the cuban government and people were pro-jewish and there could have been a lot done if the american embassy would have put pressure on the cuban government, this problem woul