The first episode won't encourage anyone to continue, it started off everything on the wrong foot. It relies heavily on flashbacks which makes the story continuity poor and loose since the writer can stir the mystery in any direction without much consideration on it being coherent or whatsoever. It's too long for such an insignificant piece of mystery. Things didn't get any better once all the mystery was revealed because of poor build up and a joke of an antagonist. I wouldn't label it as a mystery drama anyway, the majority of the drama seems preoccupied with portraying arrogance and high-class lifestyles, leaving only a minimal portion of the actual story and mystery. Even then, we didn't start to get much information until episode 9-10 which is too late. They made the FL's kid narrate most of the last episode like an adult which was weird. Cha Do Young was an utterly useless character, her character was meant to be a comedic relief and a filler but she was nothing but a horny bait. It's probably the weakest drama I've seen from Cho Yeo Jung.