Madam Secretary (season 4)

The fourth season of "Madam Secretary" an American political drama television series originally aired in the United States on CBS from October 8, 2017, through May 20, 2018. This season was produced by CBS Television Studios, with Barbara Hall and Lori McCreary as showrunner and executive producer, respectively. Debuting on September 21, 2014. "Madam Secretary" was renewed for a fifth season on April 18, 2018.
Episodes.
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Production.
Development.
"Madam Secretary" was renewed for a fourth season on March 23, 2017.
Casting.
Bebe Neuwirth left the cast after the third episode of the season. Sara Ramirez joined the cast as Kat Sandoval as a series regular. Hall said of Ramirez: "She brings a fresh perspective and a fun, energetic quality to the State Department staff."
Broadcast.
Season four of "Madam Secretary" premiered on October 8, 2017.