no. >> reporter: we hunt down the clues, an apartment building where a maria pfeifer lives.neighbors. have they ever seen the mother and those two boys? and then the biggest clue of all. look at this. the stunning video. the boys playing at a resort in slovakia caught on tape. more than a year after they disappeared. you can see their mother there in the orange shorts and what's most startling to their fathers is how they look. both of the boys with long hair, the youngest in pigtails. that's sasha to the left? that's sasha in the pigtails disguised as a girl in the yellow shirt. >> jerry is coming around right here, right? >> jerry is in -- with the long hair. >> reporter: how strange is it to see your son disguised as a little girl halfway around the world. >> it's surreal. >> reporter: the fathers showed the video to us and to the fbi. the international dragnet tightening. >> i'm waiting right now for the word from law enforcement to get on a plane and go to europe. >> reporter: you hope that call comes. >> i dream of and pray that call comes. >> reporter: and what happen