Secret Door - Episode 4

S1, E4: Heo Jung Woon is suspected to be an accomplice in the death of Shin Heung Bok's death. He's tied up and under investigation by the royal guards. As the Crown Price finds out about this, he asks what they're doing and requests that the suspected criminal be untied immediately. Even if one is accused of being a suspect, the man is not proven guilty yet. Therefore, he must be treated accordingly.