The investigation eventually leads the team to a surprising source: a high school student named Harrison Lee . Harrison Lee’s Agenda

Ivan’s vendetta is strictly against the Russian government, and he claims he has no reason to interfere with U.S. defense networks.

He hacked various systems to manufacture a relationship with the daughter of one of the Skeleton Key’s creators.

Red spends days rebuilding a music box from Elizabeth's childhood, a gesture that highlights his deep, protective emotional bond with her.

Initially, Raymond "Red" Reddington believes the thief is an elusive Russian hacker he has history with, known only as (played by Mark Ivanir). Red tracks him down in Russia, but the real Ivan reveals that someone is actually impersonating him to hide their tracks.

The episode concludes on a hijacked train, where Elizabeth Keen eventually convinces Harrison to surrender after he threatens a mass-casualty event to prove his "power". Key Subplots & Theories

In Season 1, Episode 17 of , titled "Ivan," the FBI Task Force tracks a legendary cyber-terrorist after a high-stakes theft of the "Skeleton Key" —a prototype device capable of bypassing any American security firewall. The Real Ivan vs. The Imposter