Kim Hae-sook as Sin Hyeon-sook, wife of Tae Byeong-cheo
Jang Shin-young as Tae Yoo-ra, daughter of Tae Byeong-cheo and younger sister of Tae Soo-ho, Cha Woo-Hyuk's boss at prosecutor's office whom she also has a crush on
Kim Ji-hoon as Tae Min-ho, youngest son of Tae Byeong-cheo, designated successor to head Geosan
Song Jae-hee as Tae Soo-ho, oldest son of Tae Byeong-cheo
Im Jung-eun as Na Yeong-eun, daughter of the owner of the newspaper company, wife of Tae Soo-ho
Kim Jong-goo as Tae Byeong-cheo, chairman of chaebol Geosan
Lee Seung-hyung as Sin Hyeon-cheol, younger cousin and co-conspirator of Sin Hyeon-sook, director of Geosan
Song Won-geun as Secretary Woo, personal assistant to Tae min-ho
Ha Si-eun as Hong Mi-seon, who runs a Spanish restaurant, best friends with Han Jeong-won
Yoon Bong-gil as Detective Lee
Lee Jae-gu as Ricky
Park Joo-hyung as Go Jae-il, newspaper reporter who was a colleague of Cha Woo-Hyuk, boyfriend of Hong Mi-seon
Yoon Jin-ho as Jang Bae-yoon
Kyung Sung-hwan as Kwon Byeon, lawyer and mentee of Tae Yoo-ra
This drama airs on a cable channel/pay TV which normally has a relatively smaller audience compared to free-to-air TV/public broadcasters (KBS, SBS, MBC and EBS).