The series is purely for the French, but it's not clear for an international audience. The context of events and politics. The situation is unknown to us. Their pain over the loss of Alsace and Lorraine after the war of 1870, on which the whole series is based, passes by our consciousness and feelings. It's a bad episode, and the actors are third-rate. However, the twist with who the instigator is is an elegant one.
https://rutracker.org/forum/viewtopic.php?t=5784831
The plots are not famously twisted, but it looks nice. The first film was reminiscent of Whatchappel and Murdoch Mysteries.
The series are searched for on torrents in different ways: by the name of the series and by the title of each movie individually.