this time lugovoi brought along a buddy, a man named dmitri kovtun. the one in the black turtleneck. it was a quick meeting. litvinenko drank just half a cup of tea then left. around 5:00 p.m. he caught a ride home. that night, he fell ill. and three weeks later, he was dead. so who slipped litvinenko poison that day putting his murder into motion? litvinenko told scotland yard detectives before he died he didn't know when or who had poisoned him. but he had no doubt that one or more of the men he had met that day, the two russians or the italian, was his killer. naturally, we wanted to talk to all three. coming up -- we track down the first suspect litvinenko named. are you frightened for your life? >> from -- when "date line" continues. ate line" continues. geico makes it easy to get help when you need it. with licensed agents available 24/7. it's not just easy. it's having-a-walrus-in-goal easy! roooaaaar! it's a walrus! ridiculous! yes! nice save, big guy! good job duncan! way to go! [chanting] it's not just easy. it's geico easy. oh, duncan. stay