Great writing, very good production and excellent cast. There's magic with De Ridder and El Zarkaoui, but every character in this series is well-written and well executed. If there's one point of critique it's probably that the characters of Yves Bracke and Jan Ravenakkers go through a strange transformation.
The view from a public prosecutors office is also very unique in this genre and I appreciate it very much. Too bad they stopped at 4 seasons, this could have easily continued for many more.
Hands down one of my favourite Belgian fiction series.