Insu, the Queen Mother (Korean: 인수대비; Hanja: 仁粹大妃; RR: Insudaebi) is a 2011 South Korean historical television series, starring Chae Shi-ra, Hahm Eun-jung, Kim Young-ho, Kim Mi-sook, Baek Sung-hyun and Jeon Hye-bin. Focusing on the fierce power struggle among three women in the royal court of the Joseon Dynasty, it aired from December 3, 2011 to June 24, 2012 on Saturdays and Sundays at 20:55 (KST) time slot for 60 episodes. It was one of the inaugural dramas on newly launched cable channel jTBC.Chae Shi-ra reprised the role of Queen Insu; she previously played the same character in the 1998–2000 period drama The King and the Queen, also written by Jung Ha-yeon. She said she joined the series because she wanted to explore the character further, "This drama series focuses more on the ambitious side of Queen Insu, who dreams of becoming the absolute ruler of the Joseon Dynasty, and I liked the part."