Secret Door - Episode 6

S1, E6: The Crown Prince is told that the arrow had been drawn from Goongisi, the Joseon Government Office that manufactures weapons. Although he suspects that it could've been a government official, his intel says it could be a plot of stealing government weapons to mislead the Crown Prince and the palace. The mystery continues to unfold as the Lee Sun further deciphers the scriptures of Woon's dying message.