Review by henry8-3

The appallingly sadistic murder of a young girl on her way home from a friends one night, leads to a detailed investigation which takes years out of the life of lead detective Yohan Vivès (Bastien Bouillon) and his team. Whilst there are numerous suspects, largely taken from the girls many ex lovers, most who seem to have strange obsessions and / or criminal record, no proof can be found leading to a huge frustration within the team - as the opening remarks suggest, there is always that one case that eats away at you.

Immensely absorbing detective procedural thriller in the vein of Joon-Ho's 'Memories or Murder' and Fincher's 'Zodiac' where the inability to find the culprit for such a nasty, seemingly motiveless crime affects the police involved deeply both in their personal lives and with the general frustration of not succeeding. The performances are incredibly believable, particularly from Bouillon as the young cop in charge, but also notably from Bouli Lanners as the grizzled, seasoned cop whose marriage is collapsing during the investigation. You get thoroughly dragged into this story even somehow willing the team to find the elusive clue which will put the killer away. Gripping stuff.