Breach

"Breach" is a 2007 spy thriller based on the true story of FBI agent Robert Hanssen, who was convicted of spying for the Soviet Union and Russia for over two decades. The movie follows young FBI agent Eric O'Neill as he is assigned to investigate and gather evidence against Hanssen, who is suspected of espionage. As O'Neill delves deeper into the case, he forms an intricate cat-and-mouse relationship with Hanssen, leading to a high-stakes showdown between the two men.