The romance was close to none and I didn't feel any chemistry between the leads. None of the characters called out to me, nor did I find any of them charming.
I started watching for HyungSik's face value, the main male actor, and kinda stayed for the intrigue. The resolution was however a bit disappointing.
The people who were persecuted in the past now killed and hurt a lot of innocent people. I especially don't understand why the queen was so set in making the Crown Prince's life hell, when he didn't have any fault in anything.
The female lead was supposedly a genius detective, but other than her revealing the hand - blood thing at the beginning, she didn't make any other discoveries all throughout the show. Even the coroner was the one who uncovered the twin secret.