As so many other fans of the series I was extremely disappointed to see the last two episodes of this season. Episode seven and eight were among the best ever done for this show - which is definitely one of the best European TV shows This season could have ended with the eighth episode (maybe with another 10 minutes to tell the content of ep07 & 08) in a glorious way. Unfortunately it did not.
These last two episodes were totally pointless. No more interesting storytelling. And the totally new side-plot with Jonas didn't Fit in the picture and didn't push the story further. They'd better cut it out or it could have been integrated from the beginning of season 5 on - but not added at the end. What a pity. Audiard's (which I admire for some of his great pictures) artistic" direction really didn't match the spirit of the series. Psycho-Trauma, No suspense.
But the "bureau des legendes" remain remarkable as a show.