FOLLOWING A SHOCKING EVENT ON U.S. SOIL, ELIZABETH RUSHES TO FIND ANSWERS TO PRESIDENT DALTON'S MANY QUESTIONS ABOUT HOW IT WAS ABLE TO OCCUR, ON "MADAM SECRETARY," SUNDAY, FEB. 21

"Right of the Boom" - Following a shocking event on U.S. soil, Elizabeth rushes to find answers to President Dalton's many questions about how it was able to occur, on MADAM SECRETARY, Sunday, Feb. 21 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

SERIES REGULARS:

Téa Leoni (Elizabeth McCord)
Tim Daly (Henry McCord)
Bebe Neuwirth (Nadine Tolliver)
�eljko Ivanek (Russell Jackson)
Patina Miller (Daisy Grant)
Erich Bergen (Blake Moran)
Geoffrey Arend (Matt Mahoney)
Kathrine Herzer (Alison McCord)
Evan Roe (Jason McCord)
Wallis Currie-Wood (Stephanie "Stevie" McCord)
Keith Carradine (President Conrad Dalton)

RECURRING CAST:

Sebastian Arcelus (Jay Whitman)
John Doman (Dennis Ellerman)
Jordan Lage (General Kohl)
Roslyn Ruff (Marguerite Sanchez)
Nuah Ozryel (Prince Asim)
Tony Plana (Admiral Ed Parker)
Jill Hennessy (Jane Fellows)
Mandy Gonzales (Lucy)
Lindsay Alexander Carter (Linda Peavy)
Clifton Davis (Ephraim Ware)

GUEST CAST:

Vincenzo Amato (Italian Ambassador Vittorio Civarelli)
Juan Carlos Infante (EMT #1)
Don Guillory (EMT #2)
Desiree Rodriguez (Medical Technician)
Adam Donshik (ER Doctor)
Cindy Cheung (Dr. Cary)
Christopher Gurr (FBI Agent)
Adi Hanash (Saudi Official)
Baylen Thomas (Swat Team Member)
Catrina Ganey (Nurse)

WRITTEN BY: Alexander Maggio

DIRECTED BY: Jonathan Brown