Dong Yi Episode 40

Dong Yi goes out of the palace to investigate the hand signals that being showed to her when she was a child. She and Sir Shim go to the gambling house to ask about it, but no one knows the answer. In the meantime, Cheon Soo goes back to slave village and discovers that Sword Fraternity have regrouped. The new leader of Sword Fraternity is Dong Yi's friend, Gae Doo La. The new Sword Fraternity have been targeting noblemen. But now, they are targeting King's concubine and Gae Doo La doesn't know that she is targeting Dong Yi. (Source: Viu)