>> barsky: ( laughs ) no. >> kroft: never saw joe reilly up on the hill with the binoculars? >> barsky: no. absolutely not. >> kroft: when the fbi finally got authorization from the justice department to bug barsky's home, the case broke wide open. >> reilly: within, i'd say, the first two weeks that we had microphones in his house, he had kitchen. and during the course of that dispute, he readily admitted that he was an agent operating from the soviet union. >> kroft: it was all the fbi needed to move in on barsky. they set a trap for him at a toll bridge across the delaware river as he drove home from work late one friday afternoon in may of 1997. >> barsky: i'm being waved to the side by a state trooper. and he said, "we're doing a routine traffic check. would you please get out of the car?" i get out of the car and somebody steps up from... from behind and shows me a badge. and he said, "fbi. we would like to talk to you." >> reilly: his face just dropped. and we told him that he had to go with us. >> barsky: the first words out of my mouth were, "am i under arrest?" and t