I've watched all the episodes so far twice. That's very rare for me.

Because we're so early in this series the review will be shallow.

The lead actress, Shin Hye Sun, along with Choi Jin Hyuk, just sold me to this series outright. Great actors from My Golden Life and The Last Empress.

So far they're doing a great job, and the other leads are doing well as well, although only a handful of character are developed or developing.

But a series I'd recommend right away for anyone interested in watching something only new.