Season 2 Being Written Since Feb 2015 & American Version Possible
http://www.allocine.fr/article/fichearticle_gen_carticle=18639900.html
The page linked has a video interview with the creators. They started on Season 2 a few months ago in case they got approval for another season. There's also interest in doing an American version. Looking forward to another season. I love French crime drama. Spiral & Braquo are favs of mine.