The recent recordings featured a surprise appearance by Jeon Do-yeon, whose members, who noticed his Identity at once, reacted enthusiastically thanks to his distinctive voice. He suddenly tried to get out of the room and laughed.
Jeon Do-yeon said he would invite all the members to the movie premiere in return for the hot reaction. Jeon Do-yeon caught the eye by revealing that he had been signed by Lee Seung-gi.
In addition, Jeon Do-yeon provided a limited hint, saying, "I have worked with my master." The members narrowed the candidates to Actor Jung Woo-sung, Hwang Jung-min, Ha Jung-woo and Kim Nam-gil.
The Master's Identity will be released on the 9th at 6:25 pm broadcast.
About Jeon Do-yeon
Jeon Do-yeon is a South Korean actress. She won Best Actress at the 60th Cannes Film Festival, making her the first Korean actress to win an acting award at a prestigious film festival, and Best Performance by an Actress at the 1st Asia Pacific Screen Awards for her performance in Lee Chang-dong's 2007 film Secret Sunshine.
 Wikipedia