reporter: stok says his client is a wealts are wealthy . he sued and the two men suddenly paid it all back with interests just two days after news began to break about rudy giuliani s shadow foreign policy. stok says after a quick background check on parnas and fruman. he can t believe rudy giuliani would have anything to do with them. they seemed in our opinion not to be credible. that did not take long to find out, did it? no. it took more than half an hour through searching public records. reporter: cnn s own investigation found a long list with people who did business with fruman and parnas to appropriate lease and money loans and even basketball tickets all who have sued them. some appears to not be business at all.