Enjoyed this drama after the two bad**s guys had an unexpectedly soft but strong love story. I haven't seen all of the History versions of the series but so far this is my second favorite drama after Crossing the Line. Opposites attract for both pairings in the story and each relationship evolves differently - it all seems realistic and natural for the characters. (Well as natural as it can be when you're in the underworld of crime or a cop. I imagine life is more on edge everyday than for the average person.) If you want a little more action, depth and danger to your BL, look no further. Definitely worth recommending.