It wouldn't be a K-drama if the main/supporting characters weren't voluntarily walking into obvious traps.
OK, so it wasn't Ma-ro that spilled the beans but Mu-hyool found out just as fast about his son.
I guess Bae-guk won't be getting what's coming to him just yet.
The Queen seems to have completely ignored the advice King Yu-ri gave her.
I don't know how Mu-hyool managed to keep his composure while being in the same room with King Dae-so, Do-jin, Yeon and his son. If I were him, I would've gone nuts.
I'm glad to see the relationship between Seryu and Gwe-yu has progressed beyond a one night stand. I just wish they wouldn't have cheapened it with the whole "come to my room tonight for your reward". I'm not naive enough to believe to that kind of stuff didn't happen in real history but felt it was unnecessary for the drama.