LIKES:
The little girl the FL & ML’s daughter is super cute.
Acting was good for the most part, especially Lee Joon Gi.
Music was well chosen for the scenes, but nothing memorable.
Appropriate colour palate.
Initial episode seemed interesting, but went downhill fast.
I liked the villain (acting on point!).
Cinematography: lighting, set locations, filters used and some of the special effects were good.

DISLIKES:
PRODUCTION had turned off the film stabilizer too many times and that caused the shaking camera syndrome.
WRITING
Plot holes and over use of coincidence to tell the story, contradictions, the writer unsure if this drama should be a thriller or romantic melodrama and it cause the script to become terrible and cliched. The usual trope is what it turned into, with a predictable ending. Not even giving us a little bit of character growth at the end. Also the writer needed to research how crime investigation is done, because it was very lacking. Completely disappointing in many ways.
DIRECTING
Some scenes had actor/actress reaction just over the top (FL crying and screaming too much) and also other scenes where there was serious delay in reaction.

OVERALL
Considering it was created in 2020, I had high expectations of the execution of this drama and was very disappointed. Only watch it if you have never seen a crime/thriller drama before. I don’t recommend it otherwise and I won’t rewatch it.