Wonderful World S1, E12

Psychology professor and writer Eun Soo Hyun's world shatters when her son suffers an unpunished injustice. Seeking vengeance, she unexpectedly discovers solace helping others embroiled in comparable cryptic cases.

Cast:Oh Man-seok , Kim Nam-ju , Won Hee Lee , Cha Eun-woo , Im She-mi , Kim Kang-woo , Lee Joon , Yang Hye-Ji , Park Hyuk-kwon , Lim Ji-Sub , Gil Hae-Yeon , Cha Soo-yeon , Kang Myung-joo