I will consider this episode as a rather good one, in the line, spirit and mood of this series dedicated to science mystery plots. It is as lousy as usual, as clumsy but that's where its charm is.... The main interest for me is George Geret character as a ruthless real estate broker in charge to build a gigantic residential complex in Brittany, close to the sea; and also as a sect guru leader. Very strange...OK, it's an amusing episode, fun to watch but a bit boring from time to time. So, just enjoy, it's not the worst of the show. It's typical French in the writing but this is not THE AVENGERS TV show either. No one can compare both shows.