"Tamerlane" -- Elizabeth secretly travels to Iran in an attempt to prevent a coup that could impact President Dalton\'s administration. Also, she brings her staff up to speed on the investigation into Marsh\'s death, on MADAM SECRETARY, Sunday, March 15 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Anna Deveare Smith ("Nurse Jackie," "The West Wing") guest stars as Attorney General Mary Campbell. Photo: CBS ÃÂ©2015 CBS Broadcasting, Inc. All Rights Reserved | Episode 1.16 - Tamerlane | Promotional Episode Photos | Season 1 | Madam Secretary | Gallery

SpoilerTV Image Archive | Gallery | Madam Secretary | Season 1 | Promotional Episode Photos | Episode 1.16 - Tamerlane | "Tamerlane" -- Elizabeth secretly travels to Iran in an attempt to prevent a coup that could impact President Dalton\'s administration. Also, she brings her staff up to speed on the investigation into Marsh\'s death, on MADAM SECRETARY, Sunday, March 15 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Anna Deveare Smith ("Nurse Jackie," "The West Wing") guest stars as Attorney General Mary Campbell. Photo: CBS ÃÂ©2015 CBS Broadcasting, Inc. All Rights Reserved

$"Tamerlane" -- Elizabeth secretly travels to Iran in an attempt to prevent a coup that could impact President Dalton\'s administration. Also, she brings her staff up to speed on the investigation into Marsh\'s death, on MADAM SECRETARY, Sunday, March 15 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Anna Deveare Smith ("Nurse Jackie," "The West Wing") guest stars as Attorney General Mary Campbell. Photo: CBS ÃÂ©2015 CBS Broadcasting, Inc. All Rights Reserved$