S1, E3: A team of detectives led by Timmons's "best man," Brian Tarpey, arrives in Moscow hoping to interview Lugovoy and Kovtun, now the prime suspects behind Litvinenko's murder. The discussion, conducted in Russian, yields a few promising details. At Litvinenko's funeral, his widow, Marina, receives updates on the investigation's slow progress, prompting her to take matters into her own hands.