Goo Sung Hwan is a South Korean actor. Before debuting, he worked in a theater company setting the stage decorations for the plays. He was given an opportunity to audition by director Im Kwon Taek and made his debut in 2004 with a role in the movie "Low Life" (하류인생). He has mostly appeared in supporting roles but became well-known for his 2022 role as a serial killer in "Through the Darkness" (악의 마음을 읽는 자들). He is currently represented by Big Boss Entertainment (빅보스엔터테인먼트). (Source: MyDramaList) Watch drama online for free.