Yes, the format copies from 24, the plot is like Infernal Affair - and it's convoluted. But the detail of the plot is their own. And for the times, the execution is very before it's time , especially in HK, and ESPECIALLY from TVB !!! There are tons of outdoor scenes, tones of night shots, foreign locations. Everyone is cool looking, tough talking, has a hidden agenda. There are no quick edits to make it 'seems' the action is happening. But it relies more on the slower 'pace' to create, builds up and elongate the tension. This can even create a distraction of how some part of the story will turn - even though if you think about it, the story does travels on a logical path. And even one of the 'seemingly' major character dies not 1/3 way through. I'm keeping my DVD copy and rewatching this one but is it too much to ask to release it in hi-def ? (joke)