I found this show quite interesting and different when I watched the first episode but by the time I got half way through the second episode, hearing the characters say "Oh my gosh" or "My gosh" or "My goodness" was just driving me crazy. I'm sure there's a good explanation for this (Korean censorship?) but, even if they can't use the actual (far cruder) expressions that most detectives use (in Bosch, for example), at least they could mix it up a bit! There are plenty of alternatives. I simply cannot remember the last time I heard a North American adult say "gosh". Maybe I don't move in the right circles!!