When an assassin attempts to kill President Reagan, Philip and Elizabeth scramble to handle the fallout within the KGB.
Bull helps a grieving mother sue the developers of a computer program that misidentified her son as a criminal, leading him to be fatally shot by the police; Bull and Marissa clash when she considers a job offer from a rival company.
Elizabeth tries to stop Israel from taking military action against the Iranians after Iran is suspected of nuclear activities; Russell wants congressman Jeff Pearson to support President Dalton in the House's election vote.
The United States debates whether to enact a mission to secure nuclear weapons that belong to the Pakistani government before it collapses; the Murphy Station pursues terrorist Jibral Disah.
Elizabeth must negotiate with Iran regarding their escalating nuclear program; Jason interviews his father for a school report.
