If you like Da Vinci's Inquest then you'll like this series. It has complex story lines, multiple plots and lot's of characters to love and hate just like Da Vinci's Inquest. Once you get into it you wish it wouldn't end. I hope they have another season cuz Season 1 leaves you hanging.
If you liked The Wire, you will like Intelligence. If you got confused during The Wire, you will get confused during Intelligence but don't let that get in your way of enjoying the series. I am anxious to view Season 2 if that ever comes out on DVD.