Awarded best French film of the year: The big winner at the Césars with six prizes for film, direction, screenplay and the two actors Bastien Bouillon and Bouli Lanners. In homicide, every investigator at some point comes across a crime he can't solve. And that haunts him! For Yohan, it is the murder of Clara, who is brutally killed on her way home from a party. One interrogation follows the other, there are many suspects, but again and again he is led on the wrong track by untrue statements and lies. This makes Yohan doubt more and more whether he will ever find the culprit. Only one thing is certain: the crime happened on the night of the 12th.