Kadro (14)
Park Ye-jinHong-joo
Baek Yoon-sikBaek-jung
Ryu Deok-hwanHong-je
Oh Dal-suProfessor Kim Sang-chul / Professor Oh Byung-seok
Danny AhnKang Seung-wan
Park Young-seoYong-yi
Woo HyeonMr. ParkChoi Jae-seopTeaching Assistant Lim Hee-cheolKwak Byeong-gyooSenior JeongBaek Jae-hoDetetctive KimJang Joon-nyeong-IDetective Park
Jang So-yeonBaek-jung's wife
Ju Jin-mo
Kwak Do-won