Matt asks Secretary of State Vincent Marsh if he should soften his language in his speech since it is contrary to the current administration's stance. Marsh says he wants to make a bold stance. He cancels a getaway with Nadine to deal with a personal matter. Mid-flight, his plane because to shake violently. The pilot cannot regain control. Elizabeth, Henry and Isabelle listen to his last words recorded on the black box, "so it goes". The NTSB ruled the crash an accident due to a faulty R-47 jackscrew. They identify five possible suspects who had access to the plane. Isabelle agrees to investigate them. Chief of Staff Jackson warns Elizabeth to not poke her nose where it doesn't belong after receiving a call from the NTSB chairman. Matt secretly meets with Jackson who wants him to spy on Elizabeth as he did on Marsh. Isabelle finds a new suspect, the fueling technician. She arranges to meet with him under the guise of hiring him and takes him to meet the owner, who is Elizabeth. She point blank asks him if he killed Vincent Marsh. Find out his surprising answer when you watch Madam Secretary Season 1 Episode 9 Online via TV Fanatic.