60 Minutes: Temporada 39, Episódio 20

39 - 20:

Bob Simon reports on James Joseph Dresnok, the last U.S. defector still living in North Korea, who is profiled in the documentary “Crossing the Line.” The film's producers, Daniel Gordon and Nicholas Bonner, are interviewed. Also: a profile of savant and math genius Daniel Tammet; a report on electronic technicians.