Chances that 江世孝 (悠悠's father) is an undercover cop? He was pretty much the guy who said they should rescue 天哥, which is right before Laughing 哥 set up. Another thing is that he never killed anyone and did not really do anything illegal. That's the only happy ending I see. He could be really (Lee Pak-Kiu) 李柏翹's dad. Opinions? ups downs?