Le passager

A head-strong, tough on the outside female detective in Nice works with her 2 colleagues to solve what appears to be a work of serial killer. The investigation leads to a partnership with a psychiatrist who works at a mental institution nearby, and the two work, inspite of one another's dislike for each other, to try and bring a "mythological serial killer" to justice. This is only the visible plot. This strange series of events, not only gets stranger as the days go on, but closer to home for all persons involved. Why, who, and how can all of this be happening with not a shred of evidence?