story wise this drama bring nothing new crime/investigation. nothing hadnt been done by any other drama of similar genre. no twist is unexpected in this drama.

one character bother me the most. kang mi character has no other purpose beside being an eye candy, all she has done also could have been done by any other characters, all her word are all just rhetorical bullshit, her character bring nothing to the story.

all those being said, i like the IT aspect of this drama. its at least believable, no such thing as magical technology bullshit.

music is kinda hit or miss. there were guitar shred that bring thrilling vibe and another time there were hiphop music thats kinda out of place.