most of the dramas that ive watched which revolves around a past and present timeline confused me, there were obvious plot holes, or sometimes the older/younger versions of the characters were inconsistent but in signal i didnt really felt that way. i find it satisfying how they connected things that happened in the past and the future. i was kinda afraid when i realized that they might be reviving some characters that are already dead or killing characters that were originally alive because things might start not making sense but i think they did a good job navigating those part of the story like everything still fits even after the changes. i also like the way they presented (?) the cases because sometimes in dramas that involves crimes they give off documentary vibes and i dont really appreciate that way of direction. im very heartbroken for haeyoung's brother because the real culprit behind the crime that he was framed for was never punished. imo, not only the main villain (kim bumjoo) but a lot of other wrongdoers in this drama were not punished enough and that's really the only thing that i didnt quite liked about this drama. when it comes to jaehan's character for me i will be glad if he survived or even if he didnt. both scenarios makes sense to me. tho it was a very open ending so i kinda want but also not want a second season. all in all, i highly recommend this drama if you havent watched it yet tho its very heavy emotionally and mentally so just take it slow maybe.