Forgotten

강하늘 Jin-seok 김무열 Yoo-seok / Choi Seong-uk 문성근 Jin-seok's Father / Mr. Park 나영희 Jin-seok's Father / Madam Min 남명렬 Professor Choi 이나라 Professor Choi's Wife 정택현 High School Yoo-seok 정찬비 Girl Choi Go Young Yoo-seok 배성일 Questionable Man 1 이순원 Questionable Man 2 변동준 Questionable Man 3 강신구 Jin-seok's Real Father / Precinct Policeman 4 안민영 Jin-seok's Real Mother 박재영 Jin-seok's Real Brother 박채익 Mover 권재환 Precinct Policeman 1 문성필 Precinct Policeman 2 엄인우 Precinct Policeman 3 김태응 Precinct Policeman 5 신기록 Precinct Conscripted Policeman 오현수 President Song 박경찬 Employment Agency Director 이동근 First Aid 한태은 Emergency Room Nurse 1 안유진 Emergency Room Nurse 2 조한나 Hallway Nurse 한다은 Hospital Room Nurse 이성우 Arresting Detective 1 이동진 Arresting Detective 2 연제형 Police Precinct Student 1 Kim Hyeon-mok Police Precinct Student 2 유인수 Police Precinct Student 3 김현창 Drunkard 강학수 Loan Shark 1 이창훈 Loan Shark 2 조홍우 Loan Shark 3 임정민 Questioning Detective 유재상 Hardware Store Owner 박윤식 Real Estate Agent 오민정 Real Estate Agent 정미경 Neighborhood Auntie 장이수 Man in His 60s 전상진 Criminal Investigator 1 김주황 Criminal Investigator 2 마정필 Psychiatrist 이희성 Briefing Detective 이승용 Driver in Accident Kang Shin-gu The Real Jin-seok / Police Station Officer 4