watched this without any expectation, and yesss it turns out good. the storyline was okay and quite a good pace with a good acting. the main case which is about the killer was common and predictable, but the whole voice profiling was unique and very interesting. i mean, i don't know if that's actually exist but it was super cool. the first episode already hooked me and it keeps the tension till the end. although some part in the middle was kinda draggy and slow but the other small cases make up for that. the whole dark vibe cinematography really suits and makes the drama even better. gonna watch season 2 next hope it was as good or even better.