"The Kill List" -- "The Kill List" -- As Elizabeth prepares for the arrival of Iranian President Shiraz to sign a nuclear treaty, she uncovers a top secret plot to assassinate him on United States soil. At the same time, she must deal with a massive protest by the Human Rights Campaign in response to Iran\'s plans to stone a gay citizen to death. Also, Elizabeth sees a therapist (Marsha Mason) to deal with her PTSD, on MADAM SECRETARY, Sunday, April 26 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Marsha Mason guest stars as Elizabeth\'s therapist, Dr. Kinsey Sherman. Hill Harper guest stars as Juliet\'s husband, Aiden Humphrey. From left, Aiden Humphrey (Hill Harper), Elizabeth McCord (TÃÂ©a Leoni) and Henry McCord (Tim Daly), shown. Photo: CBS ÃÂ©2015 CBS Broadcasting, Inc. All Rights Reserved | Episode 1.21 - The Kill List | Promotional Episode Photos | Season 1 | Madam Secretary | Gallery

SpoilerTV Image Archive | Gallery | Madam Secretary | Season 1 | Promotional Episode Photos | Episode 1.21 - The Kill List | "The Kill List" -- "The Kill List" -- As Elizabeth prepares for the arrival of Iranian President Shiraz to sign a nuclear treaty, she uncovers a top secret plot to assassinate him on United States soil. At the same time, she must deal with a massive protest by the Human Rights Campaign in response to Iran\'s plans to stone a gay citizen to death. Also, Elizabeth sees a therapist (Marsha Mason) to deal with her PTSD, on MADAM SECRETARY, Sunday, April 26 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Marsha Mason guest stars as Elizabeth\'s therapist, Dr. Kinsey Sherman. Hill Harper guest stars as Juliet\'s husband, Aiden Humphrey. From left, Aiden Humphrey (Hill Harper), Elizabeth McCord (TÃÂ©a Leoni) and Henry McCord (Tim Daly), shown. Photo: CBS ÃÂ©2015 CBS Broadcasting, Inc. All Rights Reserved

$"The Kill List" -- "The Kill List" -- As Elizabeth prepares for the arrival of Iranian President Shiraz to sign a nuclear treaty, she uncovers a top secret plot to assassinate him on United States soil. At the same time, she must deal with a massive protest by the Human Rights Campaign in response to Iran\'s plans to stone a gay citizen to death. Also, Elizabeth sees a therapist (Marsha Mason) to deal with her PTSD, on MADAM SECRETARY, Sunday, April 26 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Marsha Mason guest stars as Elizabeth\'s therapist, Dr. Kinsey Sherman. Hill Harper guest stars as Juliet\'s husband, Aiden Humphrey. From left, Aiden Humphrey (Hill Harper), Elizabeth McCord (TÃÂ©a Leoni) and Henry McCord (Tim Daly), shown. Photo: CBS ÃÂ©2015 CBS Broadcasting, Inc. All Rights Reserved$