So apparently Seon-ah being a former child maid for Yo-han's family is considered a horrible secret with the risk of disastrous consequences for the Social Responsibility Foundation chairwoman if made public. At least, Seon-ah's furious reaction to Attorney General Cha's threat gives that impression. Personally I'm not that clear on why this is such a big deal. If this secret is so dangerous, why did Seon-ah reveal it to Yo-han when he didn't recognize her?, The Devil Judge, Ahn Nae-sang, Choi Jeong-gyoo, Ji Sung, Jinyoung, Kim Jae-kyung, Kim Min-jung, Moon Yoo-suk, Park Gyu-young