Fabien Brochard

A father and his son visit a psychiatrist to try to understand the young man's obsessions and rituals, which all revolve around the number 13.

Astrid Nielsen works in the library of the judicial police. She has Asperger's syndrome. With an incredible memory, she excels at analyzing files of ongoing investigations. The district commander decides to use it to the fullest, entrusting her with very complex investigations which have remained unsolved to date.