First... Do No Harm

Mac faces her first terrorism crisis when a Saudi is stopped at the Canadian border with explosives in his car and a map outlining a Halloween-parade route in Springfield, Mo. He stonewalls the FBI, prompting a dispute over interrogation tactics between Mac and the attorney general, a Templeton ally. Meanwhile, Rod gets an offer he doesn't want to refuse; a Jimmy Kimmel joke about Rod on TV leads to schoolyard brawling for Horace; and Mac walks in on Rebecca and her new boyfriend.