From Heroes Wiki
Moscow is the capital city of Russia.
Mohinder calls Noah on the phone. Mohinder tells Noah about Molly's condition. Noah, who is with the Haitian at Red Square in Moscow, tells him not to bring her into the Company, but Mohinder tells him that he must help Molly.
In December 1998, Noah Bennet and Claude go to Moscow on a bag and tag mission, where they meet up with Ivan Spektor, who has now retired from the Company. They are hunting an evolved human known as the Russian, who seems to be the patriarch of a criminal family, all of them notoriously difficult to capture. They pursue him through a subway station, but when Claude suddenly appears in front of him, the Russian uses his age shifting ability to alter his appearance. They all follow him onto a subway train, and Noah realizes that all the members of the Russian's "family" are in fact the same man, shifting his age from young to old. Noah wonders how dangerous the Russian really is, and although Ivan points out that anyone with an ability can be a threat, Noah knows that they still possess humanity. When they finally catch up with the Russian, he age-shifts into a child. Claude says that Noah cannot shoot a young boy, but Ivan reminds him that his age is an illusion. Noah pulls his gun and wonders whether he can bring himself to shoot.
Noah, Claude and Ivan have cornered the Russian on a Moscow subway train. The Russian has used his age shifting ability to turn into a young boy, and Noah's hesitation to shoot a child gives the Russian time to break a window and escape from the train. As they leave the station, Ivan berates Noah for not shooting, but Noah has a hunch about the Russian's hiding place. The three go to a large marketplace, and Claude expresses his belief that the Russian is not really a killer, but Noah is doubtful. Claude sees the Russian, still in his child form, and lies to Noah to try to help the Russian get away. Ivan soon spots the Russian in the crowd and calls him out, in a successful attempt to make the Russian age-shift back into an adult body, a much easier target for Noah. The Russian pulls a knife on Ivan, but Noah shoots him dead. The three Company men share a bottle of vodka later, but Noah secretly blames Ivan for forcing him to kill.