Amateurishly edited and written, but clearly someone trying their best. Acting is uneven, but mostly good enough. Inexplicable insta-bromance, annoying female assistant, stereotypical characters and tropes. And yet.

At a snappy 12 episodes of 20 min each, this drama is tightly focused on solving the main crime. There is no room for the drag or plot-filler typical of c-dramas. The vibe is intended to be serious and grounded in reality (inasmuch as the supernatural plot permits) rather than fluffy or silly/comical. The story--excusing an occasional gap or medium leaps in logic--generally made sense. Until the ending WENT OFF THE RAILS, so bad I LOL'd. They clearly ran out of money, gave up hope for the hinted second season , and closed out the plot lines the best they could.

Verdict: it's not GOOD but...the ride is surprisingly enjoyable?

If you're a fan of investigation in a historical setting, and have low expectations, it's not the worst way to spend 4 hours.