On February 22, 2019, CBS renewed the series for both a third and a fourth season. The third season premiered on September 26, 2019. Warner Bros. Television suspended production on March 13, 2020, due to the COVID-19 pandemic, leaving the third season with only 21 episodes. Production for the fourth season began on September 22, 2020, and premiered on November 5, 2020. Production for the fourth season concluded on March 15, 2021.